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Finding the Fourth Proportional to 258,233.20, 387,349.80 and 216,898.90

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Solution

The fourth proportional to 258,233.20, 387,349.80 and 216,898.90 is: 325,348.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,233.20 : 387,349.80 = 216,898.90 : x
  2. Step 2: Convert to fraction form
    258,233.20/387,349.80 = 216,898.90/x
  3. Step 3: Cross multiply
    258,233.20x = 387,349.80 × 216,898.90
  4. Step 4: Simplify right side
    258,233.20x = 84,015,745,535.22
  5. Step 5: Solve for x
    x = 84,015,745,535.22/258,233.20
  6. Step 6: Final answer
    x = 325,348.35

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1.5x scale

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.