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Finding the Fourth Proportional to 238,401.36, 328,999.68 and 130,978.32

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Solution

The fourth proportional to 238,401.36, 328,999.68 and 130,978.32 is: 180,753.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,401.36 : 328,999.68 = 130,978.32 : x
  2. Step 2: Convert to fraction form
    238,401.36/328,999.68 = 130,978.32/x
  3. Step 3: Cross multiply
    238,401.36x = 328,999.68 × 130,978.32
  4. Step 4: Simplify right side
    238,401.36x = 43,091,825,366.94
  5. Step 5: Solve for x
    x = 43,091,825,366.94/238,401.36
  6. Step 6: Final answer
    x = 180,753.27

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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.