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Finding the Fourth Proportional to 348,489.30, 521,567.55 and 243,513.30

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Solution

The fourth proportional to 348,489.30, 521,567.55 and 243,513.30 is: 364,454.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,489.30 : 521,567.55 = 243,513.30 : x
  2. Step 2: Convert to fraction form
    348,489.30/521,567.55 = 243,513.30/x
  3. Step 3: Cross multiply
    348,489.30x = 521,567.55 × 243,513.30
  4. Step 4: Simplify right side
    348,489.30x = 127,008,635,273.42
  5. Step 5: Solve for x
    x = 127,008,635,273.42/348,489.30
  6. Step 6: Final answer
    x = 364,454.91

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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.