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Finding the Fourth Proportional to 540,121.57, 745,375.58 and 298,409.72

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Solution

The fourth proportional to 540,121.57, 745,375.58 and 298,409.72 is: 411,809.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,121.57 : 745,375.58 = 298,409.72 : x
  2. Step 2: Convert to fraction form
    540,121.57/745,375.58 = 298,409.72/x
  3. Step 3: Cross multiply
    540,121.57x = 745,375.58 × 298,409.72
  4. Step 4: Simplify right side
    540,121.57x = 222,427,312,903.71
  5. Step 5: Solve for x
    x = 222,427,312,903.71/540,121.57
  6. Step 6: Final answer
    x = 411,809.72

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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.