Home / 315,212,218,386.45-434,993,280,859.93-170,696,597,312.42

Finding the Fourth Proportional to 315,212,218,386.45, 434,993,280,859.93 and 170,696,597,312.42

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Solution

The fourth proportional to 315,212,218,386.45, 434,993,280,859.93 and 170,696,597,312.42 is: 235,561,531,455.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,212,218,386.45 : 434,993,280,859.93 = 170,696,597,312.42 : x
  2. Step 2: Convert to fraction form
    315,212,218,386.45/434,993,280,859.93 = 170,696,597,312.42/x
  3. Step 3: Cross multiply
    315,212,218,386.45x = 434,993,280,859.93 × 170,696,597,312.42
  4. Step 4: Simplify right side
    315,212,218,386.45x = 74,251,872,896,555,893,653,504
  5. Step 5: Solve for x
    x = 74,251,872,896,555,893,653,504/315,212,218,386.45
  6. Step 6: Final answer
    x = 235,561,531,455.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.