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Finding the Fourth Proportional to 543,342.30, 749,867.67 and 316,974.30

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Solution

The fourth proportional to 543,342.30, 749,867.67 and 316,974.30 is: 437,456.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,342.30 : 749,867.67 = 316,974.30 : x
  2. Step 2: Convert to fraction form
    543,342.30/749,867.67 = 316,974.30/x
  3. Step 3: Cross multiply
    543,342.30x = 749,867.67 × 316,974.30
  4. Step 4: Simplify right side
    543,342.30x = 237,688,779,790.88
  5. Step 5: Solve for x
    x = 237,688,779,790.88/543,342.30
  6. Step 6: Final answer
    x = 437,456.79

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1.5x scale

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.