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Finding the Fourth Proportional to 372,988.20, 559,422.90 and 123,670.20

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Solution

The fourth proportional to 372,988.20, 559,422.90 and 123,670.20 is: 185,485.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,988.20 : 559,422.90 = 123,670.20 : x
  2. Step 2: Convert to fraction form
    372,988.20/559,422.90 = 123,670.20/x
  3. Step 3: Cross multiply
    372,988.20x = 559,422.90 × 123,670.20
  4. Step 4: Simplify right side
    372,988.20x = 69,183,941,927.58
  5. Step 5: Solve for x
    x = 69,183,941,927.58/372,988.20
  6. Step 6: Final answer
    x = 185,485.60

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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.