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Finding the Fourth Proportional to 535,930.40, 803,895.60 and 220,613.60

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Solution

The fourth proportional to 535,930.40, 803,895.60 and 220,613.60 is: 330,920.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,930.40 : 803,895.60 = 220,613.60 : x
  2. Step 2: Convert to fraction form
    535,930.40/803,895.60 = 220,613.60/x
  3. Step 3: Cross multiply
    535,930.40x = 803,895.60 × 220,613.60
  4. Step 4: Simplify right side
    535,930.40x = 177,350,302,340.16
  5. Step 5: Solve for x
    x = 177,350,302,340.16/535,930.40
  6. Step 6: Final answer
    x = 330,920.40

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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.