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Finding the Fourth Proportional to 318,534.65, 439,577.89 and 175,294.70

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Solution

The fourth proportional to 318,534.65, 439,577.89 and 175,294.70 is: 241,906.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,534.65 : 439,577.89 = 175,294.70 : x
  2. Step 2: Convert to fraction form
    318,534.65/439,577.89 = 175,294.70/x
  3. Step 3: Cross multiply
    318,534.65x = 439,577.89 × 175,294.70
  4. Step 4: Simplify right side
    318,534.65x = 77,055,671,718.06
  5. Step 5: Solve for x
    x = 77,055,671,718.06/318,534.65
  6. Step 6: Final answer
    x = 241,906.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.