Home / 315,142.18-434,889.14-171,907.35

Finding the Fourth Proportional to 315,142.18, 434,889.14 and 171,907.35

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Solution

The fourth proportional to 315,142.18, 434,889.14 and 171,907.35 is: 237,228.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,142.18 : 434,889.14 = 171,907.35 : x
  2. Step 2: Convert to fraction form
    315,142.18/434,889.14 = 171,907.35/x
  3. Step 3: Cross multiply
    315,142.18x = 434,889.14 × 171,907.35
  4. Step 4: Simplify right side
    315,142.18x = 74,760,637,110.81
  5. Step 5: Solve for x
    x = 74,760,637,110.81/315,142.18
  6. Step 6: Final answer
    x = 237,228.28

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1.5x scale

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.