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Finding the Fourth Proportional to 319,511.10, 479,266.65 and 97,866.30

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Solution

The fourth proportional to 319,511.10, 479,266.65 and 97,866.30 is: 146,799.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,511.10 : 479,266.65 = 97,866.30 : x
  2. Step 2: Convert to fraction form
    319,511.10/479,266.65 = 97,866.30/x
  3. Step 3: Cross multiply
    319,511.10x = 479,266.65 × 97,866.30
  4. Step 4: Simplify right side
    319,511.10x = 46,904,053,748.90
  5. Step 5: Solve for x
    x = 46,904,053,748.90/319,511.10
  6. Step 6: Final answer
    x = 146,799.45

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Similar ratio
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1.5x scale

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.