Home / 286,385.28-429,655.68-86,712.36

Finding the Fourth Proportional to 286,385.28, 429,655.68 and 86,712.36

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Solution

The fourth proportional to 286,385.28, 429,655.68 and 86,712.36 is: 130,092.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,385.28 : 429,655.68 = 86,712.36 : x
  2. Step 2: Convert to fraction form
    286,385.28/429,655.68 = 86,712.36/x
  3. Step 3: Cross multiply
    286,385.28x = 429,655.68 × 86,712.36
  4. Step 4: Simplify right side
    286,385.28x = 37,256,458,000.20
  5. Step 5: Solve for x
    x = 37,256,458,000.20/286,385.28
  6. Step 6: Final answer
    x = 130,092.08

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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.