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Finding the Fourth Proportional to 402,293.60, 603,440.40 and 121,824.80

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Solution

The fourth proportional to 402,293.60, 603,440.40 and 121,824.80 is: 182,737.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,293.60 : 603,440.40 = 121,824.80 : x
  2. Step 2: Convert to fraction form
    402,293.60/603,440.40 = 121,824.80/x
  3. Step 3: Cross multiply
    402,293.60x = 603,440.40 × 121,824.80
  4. Step 4: Simplify right side
    402,293.60x = 73,514,006,041.92
  5. Step 5: Solve for x
    x = 73,514,006,041.92/402,293.60
  6. Step 6: Final answer
    x = 182,737.20

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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.