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Finding the Fourth Proportional to 243,486.69, 336,045.01 and 140,118.76

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Solution

The fourth proportional to 243,486.69, 336,045.01 and 140,118.76 is: 193,383.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,486.69 : 336,045.01 = 140,118.76 : x
  2. Step 2: Convert to fraction form
    243,486.69/336,045.01 = 140,118.76/x
  3. Step 3: Cross multiply
    243,486.69x = 336,045.01 × 140,118.76
  4. Step 4: Simplify right side
    243,486.69x = 47,086,210,105.39
  5. Step 5: Solve for x
    x = 47,086,210,105.39/243,486.69
  6. Step 6: Final answer
    x = 193,383.10

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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.