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Finding the Fourth Proportional to 292,557.66, 438,836.43 and 79,326.78

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Solution

The fourth proportional to 292,557.66, 438,836.43 and 79,326.78 is: 118,990.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,557.66 : 438,836.43 = 79,326.78 : x
  2. Step 2: Convert to fraction form
    292,557.66/438,836.43 = 79,326.78/x
  3. Step 3: Cross multiply
    292,557.66x = 438,836.43 × 79,326.78
  4. Step 4: Simplify right side
    292,557.66x = 34,811,480,938.60
  5. Step 5: Solve for x
    x = 34,811,480,938.60/292,557.66
  6. Step 6: Final answer
    x = 118,990.15

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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.