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Finding the Fourth Proportional to 487,161.60, 730,853.10 and 220,998.30

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Solution

The fourth proportional to 487,161.60, 730,853.10 and 220,998.30 is: 331,547.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,161.60 : 730,853.10 = 220,998.30 : x
  2. Step 2: Convert to fraction form
    487,161.60/730,853.10 = 220,998.30/x
  3. Step 3: Cross multiply
    487,161.60x = 730,853.10 × 220,998.30
  4. Step 4: Simplify right side
    487,161.60x = 161,517,292,649.73
  5. Step 5: Solve for x
    x = 161,517,292,649.73/487,161.60
  6. Step 6: Final answer
    x = 331,547.67

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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.