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Finding the Fourth Proportional to 255,909.97, 383,736.16 and 149,330.17

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Solution

The fourth proportional to 255,909.97, 383,736.16 and 149,330.17 is: 223,920.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,909.97 : 383,736.16 = 149,330.17 : x
  2. Step 2: Convert to fraction form
    255,909.97/383,736.16 = 149,330.17/x
  3. Step 3: Cross multiply
    255,909.97x = 383,736.16 × 149,330.17
  4. Step 4: Simplify right side
    255,909.97x = 57,303,386,007.95
  5. Step 5: Solve for x
    x = 57,303,386,007.95/255,909.97
  6. Step 6: Final answer
    x = 223,920.10

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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.