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Finding the Fourth Proportional to 418,981.34, 578,207.34 and 237,700.92

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Solution

The fourth proportional to 418,981.34, 578,207.34 and 237,700.92 is: 328,034.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,981.34 : 578,207.34 = 237,700.92 : x
  2. Step 2: Convert to fraction form
    418,981.34/578,207.34 = 237,700.92/x
  3. Step 3: Cross multiply
    418,981.34x = 578,207.34 × 237,700.92
  4. Step 4: Simplify right side
    418,981.34x = 137,440,416,668.75
  5. Step 5: Solve for x
    x = 137,440,416,668.75/418,981.34
  6. Step 6: Final answer
    x = 328,034.70

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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.