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Finding the Fourth Proportional to 276,698.80, 415,048.20 and 89,710.30

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Solution

The fourth proportional to 276,698.80, 415,048.20 and 89,710.30 is: 134,565.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,698.80 : 415,048.20 = 89,710.30 : x
  2. Step 2: Convert to fraction form
    276,698.80/415,048.20 = 89,710.30/x
  3. Step 3: Cross multiply
    276,698.80x = 415,048.20 × 89,710.30
  4. Step 4: Simplify right side
    276,698.80x = 37,234,098,536.46
  5. Step 5: Solve for x
    x = 37,234,098,536.46/276,698.80
  6. Step 6: Final answer
    x = 134,565.45

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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.