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Finding the Fourth Proportional to 372,483.81, 514,081.85 and 209,158.65

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Solution

The fourth proportional to 372,483.81, 514,081.85 and 209,158.65 is: 288,669.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,483.81 : 514,081.85 = 209,158.65 : x
  2. Step 2: Convert to fraction form
    372,483.81/514,081.85 = 209,158.65/x
  3. Step 3: Cross multiply
    372,483.81x = 514,081.85 × 209,158.65
  4. Step 4: Simplify right side
    372,483.81x = 107,524,664,689.71
  5. Step 5: Solve for x
    x = 107,524,664,689.71/372,483.81
  6. Step 6: Final answer
    x = 288,669.36

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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.