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Finding the Fourth Proportional to 373,061.60, 559,811.10 and 136,428.20

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Solution

The fourth proportional to 373,061.60, 559,811.10 and 136,428.20 is: 204,722.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,061.60 : 559,811.10 = 136,428.20 : x
  2. Step 2: Convert to fraction form
    373,061.60/559,811.10 = 136,428.20/x
  3. Step 3: Cross multiply
    373,061.60x = 559,811.10 × 136,428.20
  4. Step 4: Simplify right side
    373,061.60x = 76,374,020,713.02
  5. Step 5: Solve for x
    x = 76,374,020,713.02/373,061.60
  6. Step 6: Final answer
    x = 204,722.28

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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.