Home / 230,520.35-318,119.10-128,545.50

Finding the Fourth Proportional to 230,520.35, 318,119.10 and 128,545.50

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Solution

The fourth proportional to 230,520.35, 318,119.10 and 128,545.50 is: 177,393.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,520.35 : 318,119.10 = 128,545.50 : x
  2. Step 2: Convert to fraction form
    230,520.35/318,119.10 = 128,545.50/x
  3. Step 3: Cross multiply
    230,520.35x = 318,119.10 × 128,545.50
  4. Step 4: Simplify right side
    230,520.35x = 40,892,777,690.53
  5. Step 5: Solve for x
    x = 40,892,777,690.53/230,520.35
  6. Step 6: Final answer
    x = 177,393.35

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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.