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Finding the Fourth Proportional to 372,706.05, 514,332.41 and 209,339.85

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Solution

The fourth proportional to 372,706.05, 514,332.41 and 209,339.85 is: 288,887.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,706.05 : 514,332.41 = 209,339.85 : x
  2. Step 2: Convert to fraction form
    372,706.05/514,332.41 = 209,339.85/x
  3. Step 3: Cross multiply
    372,706.05x = 514,332.41 × 209,339.85
  4. Step 4: Simplify right side
    372,706.05x = 107,670,268,512.84
  5. Step 5: Solve for x
    x = 107,670,268,512.84/372,706.05
  6. Step 6: Final answer
    x = 288,887.90

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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.