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Finding the Fourth Proportional to 318,881.70, 440,056.14 and 175,651.38

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Solution

The fourth proportional to 318,881.70, 440,056.14 and 175,651.38 is: 242,398.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,881.70 : 440,056.14 = 175,651.38 : x
  2. Step 2: Convert to fraction form
    318,881.70/440,056.14 = 175,651.38/x
  3. Step 3: Cross multiply
    318,881.70x = 440,056.14 × 175,651.38
  4. Step 4: Simplify right side
    318,881.70x = 77,296,468,268.47
  5. Step 5: Solve for x
    x = 77,296,468,268.47/318,881.70
  6. Step 6: Final answer
    x = 242,398.57

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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.