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Finding the Fourth Proportional to 386,064.60, 577,868.10 and 275,472.60

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Solution

The fourth proportional to 386,064.60, 577,868.10 and 275,472.60 is: 412,332.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,064.60 : 577,868.10 = 275,472.60 : x
  2. Step 2: Convert to fraction form
    386,064.60/577,868.10 = 275,472.60/x
  3. Step 3: Cross multiply
    386,064.60x = 577,868.10 × 275,472.60
  4. Step 4: Simplify right side
    386,064.60x = 159,186,827,964.06
  5. Step 5: Solve for x
    x = 159,186,827,964.06/386,064.60
  6. Step 6: Final answer
    x = 412,332.10

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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.