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Finding the Fourth Proportional to 431,278.40, 595,093.28 and 240,248.64

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Solution

The fourth proportional to 431,278.40, 595,093.28 and 240,248.64 is: 331,503.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,278.40 : 595,093.28 = 240,248.64 : x
  2. Step 2: Convert to fraction form
    431,278.40/595,093.28 = 240,248.64/x
  3. Step 3: Cross multiply
    431,278.40x = 595,093.28 × 240,248.64
  4. Step 4: Simplify right side
    431,278.40x = 142,970,351,193.14
  5. Step 5: Solve for x
    x = 142,970,351,193.14/431,278.40
  6. Step 6: Final answer
    x = 331,503.62

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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.