Home / 231,349.11-319,259.58-129,373.40

Finding the Fourth Proportional to 231,349.11, 319,259.58 and 129,373.40

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Solution

The fourth proportional to 231,349.11, 319,259.58 and 129,373.40 is: 178,534.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,349.11 : 319,259.58 = 129,373.40 : x
  2. Step 2: Convert to fraction form
    231,349.11/319,259.58 = 129,373.40/x
  3. Step 3: Cross multiply
    231,349.11x = 319,259.58 × 129,373.40
  4. Step 4: Simplify right side
    231,349.11x = 41,303,697,660.17
  5. Step 5: Solve for x
    x = 41,303,697,660.17/231,349.11
  6. Step 6: Final answer
    x = 178,534.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.