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Finding the Fourth Proportional to 315,773.07, 435,761.75 and 172,530.03

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Solution

The fourth proportional to 315,773.07, 435,761.75 and 172,530.03 is: 238,088.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,773.07 : 435,761.75 = 172,530.03 : x
  2. Step 2: Convert to fraction form
    315,773.07/435,761.75 = 172,530.03/x
  3. Step 3: Cross multiply
    315,773.07x = 435,761.75 × 172,530.03
  4. Step 4: Simplify right side
    315,773.07x = 75,181,986,937.70
  5. Step 5: Solve for x
    x = 75,181,986,937.70/315,773.07
  6. Step 6: Final answer
    x = 238,088.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.