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Finding the Fourth Proportional to 299,087.10, 448,630.65 and 266,427.90

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Solution

The fourth proportional to 299,087.10, 448,630.65 and 266,427.90 is: 399,641.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,087.10 : 448,630.65 = 266,427.90 : x
  2. Step 2: Convert to fraction form
    299,087.10/448,630.65 = 266,427.90/x
  3. Step 3: Cross multiply
    299,087.10x = 448,630.65 × 266,427.90
  4. Step 4: Simplify right side
    299,087.10x = 119,527,721,955.14
  5. Step 5: Solve for x
    x = 119,527,721,955.14/299,087.10
  6. Step 6: Final answer
    x = 399,641.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.