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Finding the Fourth Proportional to 402,520.32, 603,801.18 and 103,003.56

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Solution

The fourth proportional to 402,520.32, 603,801.18 and 103,003.56 is: 154,510.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,520.32 : 603,801.18 = 103,003.56 : x
  2. Step 2: Convert to fraction form
    402,520.32/603,801.18 = 103,003.56/x
  3. Step 3: Cross multiply
    402,520.32x = 603,801.18 × 103,003.56
  4. Step 4: Simplify right side
    402,520.32x = 62,193,671,072.20
  5. Step 5: Solve for x
    x = 62,193,671,072.20/402,520.32
  6. Step 6: Final answer
    x = 154,510.64

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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.