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Finding the Fourth Proportional to 285,999.06, 394,671.18 and 156,937.14

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Solution

The fourth proportional to 285,999.06, 394,671.18 and 156,937.14 is: 216,569.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,999.06 : 394,671.18 = 156,937.14 : x
  2. Step 2: Convert to fraction form
    285,999.06/394,671.18 = 156,937.14/x
  3. Step 3: Cross multiply
    285,999.06x = 394,671.18 × 156,937.14
  4. Step 4: Simplify right side
    285,999.06x = 61,938,566,818.14
  5. Step 5: Solve for x
    x = 61,938,566,818.14/285,999.06
  6. Step 6: Final answer
    x = 216,569.12

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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.