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Finding the Fourth Proportional to 490,689.72, 736,033.65 and 153,756.18

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Solution

The fourth proportional to 490,689.72, 736,033.65 and 153,756.18 is: 230,633.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,689.72 : 736,033.65 = 153,756.18 : x
  2. Step 2: Convert to fraction form
    490,689.72/736,033.65 = 153,756.18/x
  3. Step 3: Cross multiply
    490,689.72x = 736,033.65 × 153,756.18
  4. Step 4: Simplify right side
    490,689.72x = 113,169,722,375.46
  5. Step 5: Solve for x
    x = 113,169,722,375.46/490,689.72
  6. Step 6: Final answer
    x = 230,633.98

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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.