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Finding the Fourth Proportional to 276,904.87, 382,129.07 and 149,580.47

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Solution

The fourth proportional to 276,904.87, 382,129.07 and 149,580.47 is: 206,421.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,904.87 : 382,129.07 = 149,580.47 : x
  2. Step 2: Convert to fraction form
    276,904.87/382,129.07 = 149,580.47/x
  3. Step 3: Cross multiply
    276,904.87x = 382,129.07 × 149,580.47
  4. Step 4: Simplify right side
    276,904.87x = 57,159,044,188.04
  5. Step 5: Solve for x
    x = 57,159,044,188.04/276,904.87
  6. Step 6: Final answer
    x = 206,421.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.