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Finding the Fourth Proportional to 292,753, 439,130.88 and 90,346.62

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Solution

The fourth proportional to 292,753, 439,130.88 and 90,346.62 is: 135,520.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,753 : 439,130.88 = 90,346.62 : x
  2. Step 2: Convert to fraction form
    292,753/439,130.88 = 90,346.62/x
  3. Step 3: Cross multiply
    292,753x = 439,130.88 × 90,346.62
  4. Step 4: Simplify right side
    292,753x = 39,673,990,745.63
  5. Step 5: Solve for x
    x = 39,673,990,745.63/292,753
  6. Step 6: Final answer
    x = 135,520.36

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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.