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Finding the Fourth Proportional to 503,478.68, 755,220 and 203,964.92

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Solution

The fourth proportional to 503,478.68, 755,220 and 203,964.92 is: 305,948.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,478.68 : 755,220 = 203,964.92 : x
  2. Step 2: Convert to fraction form
    503,478.68/755,220 = 203,964.92/x
  3. Step 3: Cross multiply
    503,478.68x = 755,220 × 203,964.92
  4. Step 4: Simplify right side
    503,478.68x = 154,038,386,882.40
  5. Step 5: Solve for x
    x = 154,038,386,882.40/503,478.68
  6. Step 6: Final answer
    x = 305,948.18

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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.