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Finding the Fourth Proportional to 286,308.30, 429,353.10 and 86,562.30

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Solution

The fourth proportional to 286,308.30, 429,353.10 and 86,562.30 is: 129,810.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,308.30 : 429,353.10 = 86,562.30 : x
  2. Step 2: Convert to fraction form
    286,308.30/429,353.10 = 86,562.30/x
  3. Step 3: Cross multiply
    286,308.30x = 429,353.10 × 86,562.30
  4. Step 4: Simplify right side
    286,308.30x = 37,165,791,848.13
  5. Step 5: Solve for x
    x = 37,165,791,848.13/286,308.30
  6. Step 6: Final answer
    x = 129,810.39

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.