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Finding the Fourth Proportional to 290,585.08, 435,065.52 and 156,986.68

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Solution

The fourth proportional to 290,585.08, 435,065.52 and 156,986.68 is: 235,041.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,585.08 : 435,065.52 = 156,986.68 : x
  2. Step 2: Convert to fraction form
    290,585.08/435,065.52 = 156,986.68/x
  3. Step 3: Cross multiply
    290,585.08x = 435,065.52 × 156,986.68
  4. Step 4: Simplify right side
    290,585.08x = 68,299,491,567.27
  5. Step 5: Solve for x
    x = 68,299,491,567.27/290,585.08
  6. Step 6: Final answer
    x = 235,041.29

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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.