Home / 320,240.12-480,360.18-83,580.74

Finding the Fourth Proportional to 320,240.12, 480,360.18 and 83,580.74

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Solution

The fourth proportional to 320,240.12, 480,360.18 and 83,580.74 is: 125,371.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,240.12 : 480,360.18 = 83,580.74 : x
  2. Step 2: Convert to fraction form
    320,240.12/480,360.18 = 83,580.74/x
  3. Step 3: Cross multiply
    320,240.12x = 480,360.18 × 83,580.74
  4. Step 4: Simplify right side
    320,240.12x = 40,148,859,310.93
  5. Step 5: Solve for x
    x = 40,148,859,310.93/320,240.12
  6. Step 6: Final answer
    x = 125,371.11

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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.