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Finding the Fourth Proportional to 240,856, 361,370.88 and 128,417.92

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Solution

The fourth proportional to 240,856, 361,370.88 and 128,417.92 is: 192,673.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,856 : 361,370.88 = 128,417.92 : x
  2. Step 2: Convert to fraction form
    240,856/361,370.88 = 128,417.92/x
  3. Step 3: Cross multiply
    240,856x = 361,370.88 × 128,417.92
  4. Step 4: Simplify right side
    240,856x = 46,406,496,758.17
  5. Step 5: Solve for x
    x = 46,406,496,758.17/240,856
  6. Step 6: Final answer
    x = 192,673.20

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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.