Home / 258,031.20-387,046.80-195,045.60

Finding the Fourth Proportional to 258,031.20, 387,046.80 and 195,045.60

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Solution

The fourth proportional to 258,031.20, 387,046.80 and 195,045.60 is: 292,568.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,031.20 : 387,046.80 = 195,045.60 : x
  2. Step 2: Convert to fraction form
    258,031.20/387,046.80 = 195,045.60/x
  3. Step 3: Cross multiply
    258,031.20x = 387,046.80 × 195,045.60
  4. Step 4: Simplify right side
    258,031.20x = 75,491,775,334.08
  5. Step 5: Solve for x
    x = 75,491,775,334.08/258,031.20
  6. Step 6: Final answer
    x = 292,568.40

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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.