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Finding the Fourth Proportional to 292,818, 439,393.12 and 135,046.56

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Solution

The fourth proportional to 292,818, 439,393.12 and 135,046.56 is: 202,646.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,818 : 439,393.12 = 135,046.56 : x
  2. Step 2: Convert to fraction form
    292,818/439,393.12 = 135,046.56/x
  3. Step 3: Cross multiply
    292,818x = 439,393.12 × 135,046.56
  4. Step 4: Simplify right side
    292,818x = 59,338,529,343.67
  5. Step 5: Solve for x
    x = 59,338,529,343.67/292,818
  6. Step 6: Final answer
    x = 202,646.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.