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Finding the Fourth Proportional to 485,038.80, 727,212.60 and 185,403.60

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Solution

The fourth proportional to 485,038.80, 727,212.60 and 185,403.60 is: 277,973.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,038.80 : 727,212.60 = 185,403.60 : x
  2. Step 2: Convert to fraction form
    485,038.80/727,212.60 = 185,403.60/x
  3. Step 3: Cross multiply
    485,038.80x = 727,212.60 × 185,403.60
  4. Step 4: Simplify right side
    485,038.80x = 134,827,834,005.36
  5. Step 5: Solve for x
    x = 134,827,834,005.36/485,038.80
  6. Step 6: Final answer
    x = 277,973.30

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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.