Home / 315,311.46-434,390.49-219,645.06

Finding the Fourth Proportional to 315,311.46, 434,390.49 and 219,645.06

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Solution

The fourth proportional to 315,311.46, 434,390.49 and 219,645.06 is: 302,595.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,311.46 : 434,390.49 = 219,645.06 : x
  2. Step 2: Convert to fraction form
    315,311.46/434,390.49 = 219,645.06/x
  3. Step 3: Cross multiply
    315,311.46x = 434,390.49 × 219,645.06
  4. Step 4: Simplify right side
    315,311.46x = 95,411,725,239.48
  5. Step 5: Solve for x
    x = 95,411,725,239.48/315,311.46
  6. Step 6: Final answer
    x = 302,595.17

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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.