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Finding the Fourth Proportional to 377,676, 521,192.88 and 207,909.36

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Solution

The fourth proportional to 377,676, 521,192.88 and 207,909.36 is: 286,914.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,676 : 521,192.88 = 207,909.36 : x
  2. Step 2: Convert to fraction form
    377,676/521,192.88 = 207,909.36/x
  3. Step 3: Cross multiply
    377,676x = 521,192.88 × 207,909.36
  4. Step 4: Simplify right side
    377,676x = 108,360,878,117.36
  5. Step 5: Solve for x
    x = 108,360,878,117.36/377,676
  6. Step 6: Final answer
    x = 286,914.92

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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.