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Finding the Fourth Proportional to 485,068.06, 727,602.09 and 185,640.42

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Solution

The fourth proportional to 485,068.06, 727,602.09 and 185,640.42 is: 278,460.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,068.06 : 727,602.09 = 185,640.42 : x
  2. Step 2: Convert to fraction form
    485,068.06/727,602.09 = 185,640.42/x
  3. Step 3: Cross multiply
    485,068.06x = 727,602.09 × 185,640.42
  4. Step 4: Simplify right side
    485,068.06x = 135,072,357,580.48
  5. Step 5: Solve for x
    x = 135,072,357,580.48/485,068.06
  6. Step 6: Final answer
    x = 278,460.63

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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.