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Finding the Fourth Proportional to 587,217.87, 810,347.30 and 342,187.30

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Solution

The fourth proportional to 587,217.87, 810,347.30 and 342,187.30 is: 472,210.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,217.87 : 810,347.30 = 342,187.30 : x
  2. Step 2: Convert to fraction form
    587,217.87/810,347.30 = 342,187.30/x
  3. Step 3: Cross multiply
    587,217.87x = 810,347.30 × 342,187.30
  4. Step 4: Simplify right side
    587,217.87x = 277,290,554,649.29
  5. Step 5: Solve for x
    x = 277,290,554,649.29/587,217.87
  6. Step 6: Final answer
    x = 472,210.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.