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Finding the Fourth Proportional to 347,799.80, 521,699.70 and 137,329.40

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Solution

The fourth proportional to 347,799.80, 521,699.70 and 137,329.40 is: 205,994.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,799.80 : 521,699.70 = 137,329.40 : x
  2. Step 2: Convert to fraction form
    347,799.80/521,699.70 = 137,329.40/x
  3. Step 3: Cross multiply
    347,799.80x = 521,699.70 × 137,329.40
  4. Step 4: Simplify right side
    347,799.80x = 71,644,706,781.18
  5. Step 5: Solve for x
    x = 71,644,706,781.18/347,799.80
  6. Step 6: Final answer
    x = 205,994.10

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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.