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Finding the Fourth Proportional to 372,807.09, 514,520.10 and 211,713.89

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Solution

The fourth proportional to 372,807.09, 514,520.10 and 211,713.89 is: 292,191.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,807.09 : 514,520.10 = 211,713.89 : x
  2. Step 2: Convert to fraction form
    372,807.09/514,520.10 = 211,713.89/x
  3. Step 3: Cross multiply
    372,807.09x = 514,520.10 × 211,713.89
  4. Step 4: Simplify right side
    372,807.09x = 108,931,049,281.59
  5. Step 5: Solve for x
    x = 108,931,049,281.59/372,807.09
  6. Step 6: Final answer
    x = 292,191.46

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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.