Home / 330,720.76-456,386.28-187,480.80

Finding the Fourth Proportional to 330,720.76, 456,386.28 and 187,480.80

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Solution

The fourth proportional to 330,720.76, 456,386.28 and 187,480.80 is: 258,718.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,720.76 : 456,386.28 = 187,480.80 : x
  2. Step 2: Convert to fraction form
    330,720.76/456,386.28 = 187,480.80/x
  3. Step 3: Cross multiply
    330,720.76x = 456,386.28 × 187,480.80
  4. Step 4: Simplify right side
    330,720.76x = 85,563,664,883.42
  5. Step 5: Solve for x
    x = 85,563,664,883.42/330,720.76
  6. Step 6: Final answer
    x = 258,718.76

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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.