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Finding the Fourth Proportional to 381,718.50, 526,836.35 and 220,666.92

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Solution

The fourth proportional to 381,718.50, 526,836.35 and 220,666.92 is: 304,557.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,718.50 : 526,836.35 = 220,666.92 : x
  2. Step 2: Convert to fraction form
    381,718.50/526,836.35 = 220,666.92/x
  3. Step 3: Cross multiply
    381,718.50x = 526,836.35 × 220,666.92
  4. Step 4: Simplify right side
    381,718.50x = 116,255,353,595.21
  5. Step 5: Solve for x
    x = 116,255,353,595.21/381,718.50
  6. Step 6: Final answer
    x = 304,557.82

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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.