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Finding the Fourth Proportional to 613,424.70, 920,165.85 and 192,714.30

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Solution

The fourth proportional to 613,424.70, 920,165.85 and 192,714.30 is: 289,080.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,424.70 : 920,165.85 = 192,714.30 : x
  2. Step 2: Convert to fraction form
    613,424.70/920,165.85 = 192,714.30/x
  3. Step 3: Cross multiply
    613,424.70x = 920,165.85 × 192,714.30
  4. Step 4: Simplify right side
    613,424.70x = 177,329,117,666.66
  5. Step 5: Solve for x
    x = 177,329,117,666.66/613,424.70
  6. Step 6: Final answer
    x = 289,080.50

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Double scale
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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.