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Finding the Fourth Proportional to 310,570.80, 465,856.20 and 258,082.80

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Solution

The fourth proportional to 310,570.80, 465,856.20 and 258,082.80 is: 387,124.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,570.80 : 465,856.20 = 258,082.80 : x
  2. Step 2: Convert to fraction form
    310,570.80/465,856.20 = 258,082.80/x
  3. Step 3: Cross multiply
    310,570.80x = 465,856.20 × 258,082.80
  4. Step 4: Simplify right side
    310,570.80x = 120,229,472,493.36
  5. Step 5: Solve for x
    x = 120,229,472,493.36/310,570.80
  6. Step 6: Final answer
    x = 387,124.20

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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.