Home / 268,570.10-402,855.15-81,557.30

Finding the Fourth Proportional to 268,570.10, 402,855.15 and 81,557.30

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Solution

The fourth proportional to 268,570.10, 402,855.15 and 81,557.30 is: 122,335.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,570.10 : 402,855.15 = 81,557.30 : x
  2. Step 2: Convert to fraction form
    268,570.10/402,855.15 = 81,557.30/x
  3. Step 3: Cross multiply
    268,570.10x = 402,855.15 × 81,557.30
  4. Step 4: Simplify right side
    268,570.10x = 32,855,778,325.10
  5. Step 5: Solve for x
    x = 32,855,778,325.10/268,570.10
  6. Step 6: Final answer
    x = 122,335.95

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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.