Home / 258,601.20-387,901.80-217,266.90

Finding the Fourth Proportional to 258,601.20, 387,901.80 and 217,266.90

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Solution

The fourth proportional to 258,601.20, 387,901.80 and 217,266.90 is: 325,900.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,601.20 : 387,901.80 = 217,266.90 : x
  2. Step 2: Convert to fraction form
    258,601.20/387,901.80 = 217,266.90/x
  3. Step 3: Cross multiply
    258,601.20x = 387,901.80 × 217,266.90
  4. Step 4: Simplify right side
    258,601.20x = 84,278,221,590.42
  5. Step 5: Solve for x
    x = 84,278,221,590.42/258,601.20
  6. Step 6: Final answer
    x = 325,900.35

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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.