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Finding the Fourth Proportional to 270,349.88, 405,565.13 and 99,558.45

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Solution

The fourth proportional to 270,349.88, 405,565.13 and 99,558.45 is: 149,352.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,349.88 : 405,565.13 = 99,558.45 : x
  2. Step 2: Convert to fraction form
    270,349.88/405,565.13 = 99,558.45/x
  3. Step 3: Cross multiply
    270,349.88x = 405,565.13 × 99,558.45
  4. Step 4: Simplify right side
    270,349.88x = 40,377,437,116.71
  5. Step 5: Solve for x
    x = 40,377,437,116.71/270,349.88
  6. Step 6: Final answer
    x = 149,352.53

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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.