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Finding the Fourth Proportional to 587,091, 880,636.50 and 143,859

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Solution

The fourth proportional to 587,091, 880,636.50 and 143,859 is: 215,788.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,091 : 880,636.50 = 143,859 : x
  2. Step 2: Convert to fraction form
    587,091/880,636.50 = 143,859/x
  3. Step 3: Cross multiply
    587,091x = 880,636.50 × 143,859
  4. Step 4: Simplify right side
    587,091x = 126,687,486,253.50
  5. Step 5: Solve for x
    x = 126,687,486,253.50/587,091
  6. Step 6: Final answer
    x = 215,788.50

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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.