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Finding the Fourth Proportional to 472,979, 652,724.79 and 258,132.80

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Solution

The fourth proportional to 472,979, 652,724.79 and 258,132.80 is: 356,230.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,979 : 652,724.79 = 258,132.80 : x
  2. Step 2: Convert to fraction form
    472,979/652,724.79 = 258,132.80/x
  3. Step 3: Cross multiply
    472,979x = 652,724.79 × 258,132.80
  4. Step 4: Simplify right side
    472,979x = 168,489,677,672.11
  5. Step 5: Solve for x
    x = 168,489,677,672.11/472,979
  6. Step 6: Final answer
    x = 356,230.78

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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.