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Finding the Fourth Proportional to 276,666.30, 415,048.05 and 99,276.30

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Solution

The fourth proportional to 276,666.30, 415,048.05 and 99,276.30 is: 148,931.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,666.30 : 415,048.05 = 99,276.30 : x
  2. Step 2: Convert to fraction form
    276,666.30/415,048.05 = 99,276.30/x
  3. Step 3: Cross multiply
    276,666.30x = 415,048.05 × 99,276.30
  4. Step 4: Simplify right side
    276,666.30x = 41,204,434,726.22
  5. Step 5: Solve for x
    x = 41,204,434,726.22/276,666.30
  6. Step 6: Final answer
    x = 148,931.89

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1.5x scale

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.