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Finding the Fourth Proportional to 266,878.63, 400,255.05 and 98,307.41

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Solution

The fourth proportional to 266,878.63, 400,255.05 and 98,307.41 is: 147,437.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,878.63 : 400,255.05 = 98,307.41 : x
  2. Step 2: Convert to fraction form
    266,878.63/400,255.05 = 98,307.41/x
  3. Step 3: Cross multiply
    266,878.63x = 400,255.05 × 98,307.41
  4. Step 4: Simplify right side
    266,878.63x = 39,348,035,672.30
  5. Step 5: Solve for x
    x = 39,348,035,672.30/266,878.63
  6. Step 6: Final answer
    x = 147,437.94

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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.