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Finding the Fourth Proportional to 379,862.40, 523,697.14 and 243,659.94

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Solution

The fourth proportional to 379,862.40, 523,697.14 and 243,659.94 is: 335,921.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,862.40 : 523,697.14 = 243,659.94 : x
  2. Step 2: Convert to fraction form
    379,862.40/523,697.14 = 243,659.94/x
  3. Step 3: Cross multiply
    379,862.40x = 523,697.14 × 243,659.94
  4. Step 4: Simplify right side
    379,862.40x = 127,604,013,710.57
  5. Step 5: Solve for x
    x = 127,604,013,710.57/379,862.40
  6. Step 6: Final answer
    x = 335,921.68

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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.