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Finding the Fourth Proportional to 402,989.60, 604,338.60 and 163,002.80

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Solution

The fourth proportional to 402,989.60, 604,338.60 and 163,002.80 is: 244,445.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,989.60 : 604,338.60 = 163,002.80 : x
  2. Step 2: Convert to fraction form
    402,989.60/604,338.60 = 163,002.80/x
  3. Step 3: Cross multiply
    402,989.60x = 604,338.60 × 163,002.80
  4. Step 4: Simplify right side
    402,989.60x = 98,508,883,948.08
  5. Step 5: Solve for x
    x = 98,508,883,948.08/402,989.60
  6. Step 6: Final answer
    x = 244,445.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.