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Finding the Fourth Proportional to 238,415.13, 329,015.12 and 130,987.40

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Solution

The fourth proportional to 238,415.13, 329,015.12 and 130,987.40 is: 180,763.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,415.13 : 329,015.12 = 130,987.40 : x
  2. Step 2: Convert to fraction form
    238,415.13/329,015.12 = 130,987.40/x
  3. Step 3: Cross multiply
    238,415.13x = 329,015.12 × 130,987.40
  4. Step 4: Simplify right side
    238,415.13x = 43,096,832,829.48
  5. Step 5: Solve for x
    x = 43,096,832,829.48/238,415.13
  6. Step 6: Final answer
    x = 180,763.83

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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.