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Finding the Fourth Proportional to 219,357.42, 328,893.57 and 86,250.66

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Solution

The fourth proportional to 219,357.42, 328,893.57 and 86,250.66 is: 129,319.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,357.42 : 328,893.57 = 86,250.66 : x
  2. Step 2: Convert to fraction form
    219,357.42/328,893.57 = 86,250.66/x
  3. Step 3: Cross multiply
    219,357.42x = 328,893.57 × 86,250.66
  4. Step 4: Simplify right side
    219,357.42x = 28,367,287,482.26
  5. Step 5: Solve for x
    x = 28,367,287,482.26/219,357.42
  6. Step 6: Final answer
    x = 129,319.94

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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.