Home / 643,009.06-964,513.85-238,340.42

Finding the Fourth Proportional to 643,009.06, 964,513.85 and 238,340.42

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Solution

The fourth proportional to 643,009.06, 964,513.85 and 238,340.42 is: 357,510.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,009.06 : 964,513.85 = 238,340.42 : x
  2. Step 2: Convert to fraction form
    643,009.06/964,513.85 = 238,340.42/x
  3. Step 3: Cross multiply
    643,009.06x = 964,513.85 × 238,340.42
  4. Step 4: Simplify right side
    643,009.06x = 229,882,641,143.86
  5. Step 5: Solve for x
    x = 229,882,641,143.86/643,009.06
  6. Step 6: Final answer
    x = 357,510.74

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Similar ratio
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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.