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Finding the Fourth Proportional to 408,061.47, 562,531.32 and 285,172.32

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Solution

The fourth proportional to 408,061.47, 562,531.32 and 285,172.32 is: 393,123.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,061.47 : 562,531.32 = 285,172.32 : x
  2. Step 2: Convert to fraction form
    408,061.47/562,531.32 = 285,172.32/x
  3. Step 3: Cross multiply
    408,061.47x = 562,531.32 × 285,172.32
  4. Step 4: Simplify right side
    408,061.47x = 160,418,361,597.06
  5. Step 5: Solve for x
    x = 160,418,361,597.06/408,061.47
  6. Step 6: Final answer
    x = 393,123.03

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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.