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Finding the Fourth Proportional to 372,442.60, 558,663.90 and 343,282.60

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Solution

The fourth proportional to 372,442.60, 558,663.90 and 343,282.60 is: 514,923.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,442.60 : 558,663.90 = 343,282.60 : x
  2. Step 2: Convert to fraction form
    372,442.60/558,663.90 = 343,282.60/x
  3. Step 3: Cross multiply
    372,442.60x = 558,663.90 × 343,282.60
  4. Step 4: Simplify right side
    372,442.60x = 191,779,596,118.14
  5. Step 5: Solve for x
    x = 191,779,596,118.14/372,442.60
  6. Step 6: Final answer
    x = 514,923.90

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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.