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Finding the Fourth Proportional to 558,315.90, 838,251.45 and 348,363.90

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Solution

The fourth proportional to 558,315.90, 838,251.45 and 348,363.90 is: 523,031.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,315.90 : 838,251.45 = 348,363.90 : x
  2. Step 2: Convert to fraction form
    558,315.90/838,251.45 = 348,363.90/x
  3. Step 3: Cross multiply
    558,315.90x = 838,251.45 × 348,363.90
  4. Step 4: Simplify right side
    558,315.90x = 292,016,544,302.66
  5. Step 5: Solve for x
    x = 292,016,544,302.66/558,315.90
  6. Step 6: Final answer
    x = 523,031.04

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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.