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Finding the Fourth Proportional to 402,385.95, 603,672.39 and 118,065.06

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Solution

The fourth proportional to 402,385.95, 603,672.39 and 118,065.06 is: 177,125.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,385.95 : 603,672.39 = 118,065.06 : x
  2. Step 2: Convert to fraction form
    402,385.95/603,672.39 = 118,065.06/x
  3. Step 3: Cross multiply
    402,385.95x = 603,672.39 × 118,065.06
  4. Step 4: Simplify right side
    402,385.95x = 71,272,616,945.69
  5. Step 5: Solve for x
    x = 71,272,616,945.69/402,385.95
  6. Step 6: Final answer
    x = 177,125.01

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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.