Home / 288,197.12-432,290.16-130,315.28

Finding the Fourth Proportional to 288,197.12, 432,290.16 and 130,315.28

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Solution

The fourth proportional to 288,197.12, 432,290.16 and 130,315.28 is: 195,470.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,197.12 : 432,290.16 = 130,315.28 : x
  2. Step 2: Convert to fraction form
    288,197.12/432,290.16 = 130,315.28/x
  3. Step 3: Cross multiply
    288,197.12x = 432,290.16 × 130,315.28
  4. Step 4: Simplify right side
    288,197.12x = 56,334,013,241.64
  5. Step 5: Solve for x
    x = 56,334,013,241.64/288,197.12
  6. Step 6: Final answer
    x = 195,470.42

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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.