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Finding the Fourth Proportional to 276,293.92, 381,263.80 and 155,411.14

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Solution

The fourth proportional to 276,293.92, 381,263.80 and 155,411.14 is: 214,455.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,293.92 : 381,263.80 = 155,411.14 : x
  2. Step 2: Convert to fraction form
    276,293.92/381,263.80 = 155,411.14/x
  3. Step 3: Cross multiply
    276,293.92x = 381,263.80 × 155,411.14
  4. Step 4: Simplify right side
    276,293.92x = 59,252,641,798.73
  5. Step 5: Solve for x
    x = 59,252,641,798.73/276,293.92
  6. Step 6: Final answer
    x = 214,455.11

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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.