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Finding the Fourth Proportional to 587,319.80, 881,210.10 and 213,380.60

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Solution

The fourth proportional to 587,319.80, 881,210.10 and 213,380.60 is: 320,154.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,319.80 : 881,210.10 = 213,380.60 : x
  2. Step 2: Convert to fraction form
    587,319.80/881,210.10 = 213,380.60/x
  3. Step 3: Cross multiply
    587,319.80x = 881,210.10 × 213,380.60
  4. Step 4: Simplify right side
    587,319.80x = 188,033,139,864.06
  5. Step 5: Solve for x
    x = 188,033,139,864.06/587,319.80
  6. Step 6: Final answer
    x = 320,154.61

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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.