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Finding the Fourth Proportional to 318,713.79, 478,066.37 and 108,498.27

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Solution

The fourth proportional to 318,713.79, 478,066.37 and 108,498.27 is: 162,745.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,713.79 : 478,066.37 = 108,498.27 : x
  2. Step 2: Convert to fraction form
    318,713.79/478,066.37 = 108,498.27/x
  3. Step 3: Cross multiply
    318,713.79x = 478,066.37 × 108,498.27
  4. Step 4: Simplify right side
    318,713.79x = 51,869,373,547.69
  5. Step 5: Solve for x
    x = 51,869,373,547.69/318,713.79
  6. Step 6: Final answer
    x = 162,745.93

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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.