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Finding the Fourth Proportional to 343,387.40, 515,081.10 and 337,555.40

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Solution

The fourth proportional to 343,387.40, 515,081.10 and 337,555.40 is: 506,333.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,387.40 : 515,081.10 = 337,555.40 : x
  2. Step 2: Convert to fraction form
    343,387.40/515,081.10 = 337,555.40/x
  3. Step 3: Cross multiply
    343,387.40x = 515,081.10 × 337,555.40
  4. Step 4: Simplify right side
    343,387.40x = 173,868,406,742.94
  5. Step 5: Solve for x
    x = 173,868,406,742.94/343,387.40
  6. Step 6: Final answer
    x = 506,333.10

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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.