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Finding the Fourth Proportional to 370,511.76, 555,766.80 and 90,029.28

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Solution

The fourth proportional to 370,511.76, 555,766.80 and 90,029.28 is: 135,043.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,511.76 : 555,766.80 = 90,029.28 : x
  2. Step 2: Convert to fraction form
    370,511.76/555,766.80 = 90,029.28/x
  3. Step 3: Cross multiply
    370,511.76x = 555,766.80 × 90,029.28
  4. Step 4: Simplify right side
    370,511.76x = 50,035,284,851.90
  5. Step 5: Solve for x
    x = 50,035,284,851.90/370,511.76
  6. Step 6: Final answer
    x = 135,043.72

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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.