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Finding the Fourth Proportional to 402,035.04, 603,140.04 and 121,545

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Solution

The fourth proportional to 402,035.04, 603,140.04 and 121,545 is: 182,343.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,035.04 : 603,140.04 = 121,545 : x
  2. Step 2: Convert to fraction form
    402,035.04/603,140.04 = 121,545/x
  3. Step 3: Cross multiply
    402,035.04x = 603,140.04 × 121,545
  4. Step 4: Simplify right side
    402,035.04x = 73,308,656,161.80
  5. Step 5: Solve for x
    x = 73,308,656,161.80/402,035.04
  6. Step 6: Final answer
    x = 182,343.95

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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.