Home / 287,642.18-431,525.55-110,149.20

Finding the Fourth Proportional to 287,642.18, 431,525.55 and 110,149.20

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Solution

The fourth proportional to 287,642.18, 431,525.55 and 110,149.20 is: 165,247.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,642.18 : 431,525.55 = 110,149.20 : x
  2. Step 2: Convert to fraction form
    287,642.18/431,525.55 = 110,149.20/x
  3. Step 3: Cross multiply
    287,642.18x = 431,525.55 × 110,149.20
  4. Step 4: Simplify right side
    287,642.18x = 47,532,191,403.69
  5. Step 5: Solve for x
    x = 47,532,191,403.69/287,642.18
  6. Step 6: Final answer
    x = 165,247.64

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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.