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Finding the Fourth Proportional to 286,176.82, 429,268.20 and 86,498.86

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Solution

The fourth proportional to 286,176.82, 429,268.20 and 86,498.86 is: 129,749.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,176.82 : 429,268.20 = 86,498.86 : x
  2. Step 2: Convert to fraction form
    286,176.82/429,268.20 = 86,498.86/x
  3. Step 3: Cross multiply
    286,176.82x = 429,268.20 × 86,498.86
  4. Step 4: Simplify right side
    286,176.82x = 37,131,209,934.25
  5. Step 5: Solve for x
    x = 37,131,209,934.25/286,176.82
  6. Step 6: Final answer
    x = 129,749.19

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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.