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Finding the Fourth Proportional to 378,526.89, 522,235.20 and 242,635.76

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Solution

The fourth proportional to 378,526.89, 522,235.20 and 242,635.76 is: 334,752.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,526.89 : 522,235.20 = 242,635.76 : x
  2. Step 2: Convert to fraction form
    378,526.89/522,235.20 = 242,635.76/x
  3. Step 3: Cross multiply
    378,526.89x = 522,235.20 × 242,635.76
  4. Step 4: Simplify right side
    378,526.89x = 126,712,935,956.34
  5. Step 5: Solve for x
    x = 126,712,935,956.34/378,526.89
  6. Step 6: Final answer
    x = 334,752.80

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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.