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Finding the Fourth Proportional to 485,999.46, 728,925.26 and 186,621.03

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Solution

The fourth proportional to 485,999.46, 728,925.26 and 186,621.03 is: 279,903.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,999.46 : 728,925.26 = 186,621.03 : x
  2. Step 2: Convert to fraction form
    485,999.46/728,925.26 = 186,621.03/x
  3. Step 3: Cross multiply
    485,999.46x = 728,925.26 × 186,621.03
  4. Step 4: Simplify right side
    485,999.46x = 136,032,781,881.11
  5. Step 5: Solve for x
    x = 136,032,781,881.11/485,999.46
  6. Step 6: Final answer
    x = 279,903.15

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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.