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Finding the Fourth Proportional to 272,842, 376,525.96 and 158,129.20

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Solution

The fourth proportional to 272,842, 376,525.96 and 158,129.20 is: 218,220.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,842 : 376,525.96 = 158,129.20 : x
  2. Step 2: Convert to fraction form
    272,842/376,525.96 = 158,129.20/x
  3. Step 3: Cross multiply
    272,842x = 376,525.96 × 158,129.20
  4. Step 4: Simplify right side
    272,842x = 59,539,748,834.03
  5. Step 5: Solve for x
    x = 59,539,748,834.03/272,842
  6. Step 6: Final answer
    x = 218,220.61

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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.