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Finding the Fourth Proportional to 316,548, 474,816.60 and 79,888.95

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Solution

The fourth proportional to 316,548, 474,816.60 and 79,888.95 is: 119,832.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,548 : 474,816.60 = 79,888.95 : x
  2. Step 2: Convert to fraction form
    316,548/474,816.60 = 79,888.95/x
  3. Step 3: Cross multiply
    316,548x = 474,816.60 × 79,888.95
  4. Step 4: Simplify right side
    316,548x = 37,932,599,616.57
  5. Step 5: Solve for x
    x = 37,932,599,616.57/316,548
  6. Step 6: Final answer
    x = 119,832.06

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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.