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Finding the Fourth Proportional to 369,740.57, 554,610.87 and 120,422.57

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Solution

The fourth proportional to 369,740.57, 554,610.87 and 120,422.57 is: 180,633.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,740.57 : 554,610.87 = 120,422.57 : x
  2. Step 2: Convert to fraction form
    369,740.57/554,610.87 = 120,422.57/x
  3. Step 3: Cross multiply
    369,740.57x = 554,610.87 × 120,422.57
  4. Step 4: Simplify right side
    369,740.57x = 66,787,663,542.28
  5. Step 5: Solve for x
    x = 66,787,663,542.28/369,740.57
  6. Step 6: Final answer
    x = 180,633.85

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1.5x scale

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.