Home / 288,555.35-432,854.78-86,135.46

Finding the Fourth Proportional to 288,555.35, 432,854.78 and 86,135.46

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Solution

The fourth proportional to 288,555.35, 432,854.78 and 86,135.46 is: 129,209.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,555.35 : 432,854.78 = 86,135.46 : x
  2. Step 2: Convert to fraction form
    288,555.35/432,854.78 = 86,135.46/x
  3. Step 3: Cross multiply
    288,555.35x = 432,854.78 × 86,135.46
  4. Step 4: Simplify right side
    288,555.35x = 37,284,145,157.82
  5. Step 5: Solve for x
    x = 37,284,145,157.82/288,555.35
  6. Step 6: Final answer
    x = 129,209.68

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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.