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Finding the Fourth Proportional to 386,312.60, 579,468.90 and 102,002.60

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Solution

The fourth proportional to 386,312.60, 579,468.90 and 102,002.60 is: 153,003.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,312.60 : 579,468.90 = 102,002.60 : x
  2. Step 2: Convert to fraction form
    386,312.60/579,468.90 = 102,002.60/x
  3. Step 3: Cross multiply
    386,312.60x = 579,468.90 × 102,002.60
  4. Step 4: Simplify right side
    386,312.60x = 59,107,334,419.14
  5. Step 5: Solve for x
    x = 59,107,334,419.14/386,312.60
  6. Step 6: Final answer
    x = 153,003.90

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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.