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Finding the Fourth Proportional to 286,270.88, 429,421.98 and 86,586.44

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Solution

The fourth proportional to 286,270.88, 429,421.98 and 86,586.44 is: 129,884.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,270.88 : 429,421.98 = 86,586.44 : x
  2. Step 2: Convert to fraction form
    286,270.88/429,421.98 = 86,586.44/x
  3. Step 3: Cross multiply
    286,270.88x = 429,421.98 × 86,586.44
  4. Step 4: Simplify right side
    286,270.88x = 37,182,120,505.95
  5. Step 5: Solve for x
    x = 37,182,120,505.95/286,270.88
  6. Step 6: Final answer
    x = 129,884.40

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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.