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Finding the Fourth Proportional to 485,202.30, 727,803.45 and 308,055.30

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Solution

The fourth proportional to 485,202.30, 727,803.45 and 308,055.30 is: 462,082.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,202.30 : 727,803.45 = 308,055.30 : x
  2. Step 2: Convert to fraction form
    485,202.30/727,803.45 = 308,055.30/x
  3. Step 3: Cross multiply
    485,202.30x = 727,803.45 × 308,055.30
  4. Step 4: Simplify right side
    485,202.30x = 224,203,710,130.79
  5. Step 5: Solve for x
    x = 224,203,710,130.79/485,202.30
  6. Step 6: Final answer
    x = 462,082.95

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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.