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Finding the Fourth Proportional to 318,908.70, 478,363.05 and 244,259.10

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Solution

The fourth proportional to 318,908.70, 478,363.05 and 244,259.10 is: 366,388.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,908.70 : 478,363.05 = 244,259.10 : x
  2. Step 2: Convert to fraction form
    318,908.70/478,363.05 = 244,259.10/x
  3. Step 3: Cross multiply
    318,908.70x = 478,363.05 × 244,259.10
  4. Step 4: Simplify right side
    318,908.70x = 116,844,528,066.26
  5. Step 5: Solve for x
    x = 116,844,528,066.26/318,908.70
  6. Step 6: Final answer
    x = 366,388.65

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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.