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Finding the Fourth Proportional to 490,613.90, 736,002.80 and 153,587.48

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Solution

The fourth proportional to 490,613.90, 736,002.80 and 153,587.48 is: 230,406.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,613.90 : 736,002.80 = 153,587.48 : x
  2. Step 2: Convert to fraction form
    490,613.90/736,002.80 = 153,587.48/x
  3. Step 3: Cross multiply
    490,613.90x = 736,002.80 × 153,587.48
  4. Step 4: Simplify right side
    490,613.90x = 113,040,814,557.01
  5. Step 5: Solve for x
    x = 113,040,814,557.01/490,613.90
  6. Step 6: Final answer
    x = 230,406.87

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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.