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Finding the Fourth Proportional to 418,981.37, 578,207.31 and 237,700.94

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Solution

The fourth proportional to 418,981.37, 578,207.31 and 237,700.94 is: 328,034.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,981.37 : 578,207.31 = 237,700.94 : x
  2. Step 2: Convert to fraction form
    418,981.37/578,207.31 = 237,700.94/x
  3. Step 3: Cross multiply
    418,981.37x = 578,207.31 × 237,700.94
  4. Step 4: Simplify right side
    418,981.37x = 137,440,421,101.87
  5. Step 5: Solve for x
    x = 137,440,421,101.87/418,981.37
  6. Step 6: Final answer
    x = 328,034.68

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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.