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Finding the Fourth Proportional to 313,101.47, 432,081.32 and 169,862.55

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Solution

The fourth proportional to 313,101.47, 432,081.32 and 169,862.55 is: 234,411.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,101.47 : 432,081.32 = 169,862.55 : x
  2. Step 2: Convert to fraction form
    313,101.47/432,081.32 = 169,862.55/x
  3. Step 3: Cross multiply
    313,101.47x = 432,081.32 × 169,862.55
  4. Step 4: Simplify right side
    313,101.47x = 73,394,433,973.25
  5. Step 5: Solve for x
    x = 73,394,433,973.25/313,101.47
  6. Step 6: Final answer
    x = 234,411.02

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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.