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Finding the Fourth Proportional to 286,360.48, 429,540.18 and 159,978.88

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Solution

The fourth proportional to 286,360.48, 429,540.18 and 159,978.88 is: 239,968.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,360.48 : 429,540.18 = 159,978.88 : x
  2. Step 2: Convert to fraction form
    286,360.48/429,540.18 = 159,978.88/x
  3. Step 3: Cross multiply
    286,360.48x = 429,540.18 × 159,978.88
  4. Step 4: Simplify right side
    286,360.48x = 68,717,356,911.40
  5. Step 5: Solve for x
    x = 68,717,356,911.40/286,360.48
  6. Step 6: Final answer
    x = 239,968.02

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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.