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Finding the Fourth Proportional to 318,884.90, 440,061.09 and 175,644.93

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Solution

The fourth proportional to 318,884.90, 440,061.09 and 175,644.93 is: 242,389.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,884.90 : 440,061.09 = 175,644.93 : x
  2. Step 2: Convert to fraction form
    318,884.90/440,061.09 = 175,644.93/x
  3. Step 3: Cross multiply
    318,884.90x = 440,061.09 × 175,644.93
  4. Step 4: Simplify right side
    318,884.90x = 77,294,499,348.77
  5. Step 5: Solve for x
    x = 77,294,499,348.77/318,884.90
  6. Step 6: Final answer
    x = 242,389.97

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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.