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Finding the Fourth Proportional to 360,012.68, 496,445.38 and 309,193.68

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Solution

The fourth proportional to 360,012.68, 496,445.38 and 309,193.68 is: 426,367.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,012.68 : 496,445.38 = 309,193.68 : x
  2. Step 2: Convert to fraction form
    360,012.68/496,445.38 = 309,193.68/x
  3. Step 3: Cross multiply
    360,012.68x = 496,445.38 × 309,193.68
  4. Step 4: Simplify right side
    360,012.68x = 153,497,773,961.20
  5. Step 5: Solve for x
    x = 153,497,773,961.20/360,012.68
  6. Step 6: Final answer
    x = 426,367.69

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Half scale
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Double scale
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1.5x scale

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.