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Finding the Fourth Proportional to 276,686.30, 415,029.45 and 253,066.70

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Solution

The fourth proportional to 276,686.30, 415,029.45 and 253,066.70 is: 379,600.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,686.30 : 415,029.45 = 253,066.70 : x
  2. Step 2: Convert to fraction form
    276,686.30/415,029.45 = 253,066.70/x
  3. Step 3: Cross multiply
    276,686.30x = 415,029.45 × 253,066.70
  4. Step 4: Simplify right side
    276,686.30x = 105,030,133,314.32
  5. Step 5: Solve for x
    x = 105,030,133,314.32/276,686.30
  6. Step 6: Final answer
    x = 379,600.05

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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.