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Finding the Fourth Proportional to 540,158.26, 745,448.30 and 298,435.65

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Solution

The fourth proportional to 540,158.26, 745,448.30 and 298,435.65 is: 411,857.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,158.26 : 745,448.30 = 298,435.65 : x
  2. Step 2: Convert to fraction form
    540,158.26/745,448.30 = 298,435.65/x
  3. Step 3: Cross multiply
    540,158.26x = 745,448.30 × 298,435.65
  4. Step 4: Simplify right side
    540,158.26x = 222,468,347,951.90
  5. Step 5: Solve for x
    x = 222,468,347,951.90/540,158.26
  6. Step 6: Final answer
    x = 411,857.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.