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Finding the Fourth Proportional to 286,512.68, 429,069 and 247,321.64

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Solution

The fourth proportional to 286,512.68, 429,069 and 247,321.64 is: 370,378.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,512.68 : 429,069 = 247,321.64 : x
  2. Step 2: Convert to fraction form
    286,512.68/429,069 = 247,321.64/x
  3. Step 3: Cross multiply
    286,512.68x = 429,069 × 247,321.64
  4. Step 4: Simplify right side
    286,512.68x = 106,118,048,753.16
  5. Step 5: Solve for x
    x = 106,118,048,753.16/286,512.68
  6. Step 6: Final answer
    x = 370,378.19

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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.