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Finding the Fourth Proportional to 276,960.17, 415,510.23 and 77,280.42

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Solution

The fourth proportional to 276,960.17, 415,510.23 and 77,280.42 is: 115,940.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,960.17 : 415,510.23 = 77,280.42 : x
  2. Step 2: Convert to fraction form
    276,960.17/415,510.23 = 77,280.42/x
  3. Step 3: Cross multiply
    276,960.17x = 415,510.23 × 77,280.42
  4. Step 4: Simplify right side
    276,960.17x = 32,110,805,088.70
  5. Step 5: Solve for x
    x = 32,110,805,088.70/276,960.17
  6. Step 6: Final answer
    x = 115,940.16

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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.