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Finding the Fourth Proportional to 402,003.60, 603,005.40 and 165,224.40

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Solution

The fourth proportional to 402,003.60, 603,005.40 and 165,224.40 is: 247,836.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,003.60 : 603,005.40 = 165,224.40 : x
  2. Step 2: Convert to fraction form
    402,003.60/603,005.40 = 165,224.40/x
  3. Step 3: Cross multiply
    402,003.60x = 603,005.40 × 165,224.40
  4. Step 4: Simplify right side
    402,003.60x = 99,631,205,411.76
  5. Step 5: Solve for x
    x = 99,631,205,411.76/402,003.60
  6. Step 6: Final answer
    x = 247,836.60

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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.