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Finding the Fourth Proportional to 318,987.05, 478,574.13 and 94,353.39

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Solution

The fourth proportional to 318,987.05, 478,574.13 and 94,353.39 is: 141,557.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,987.05 : 478,574.13 = 94,353.39 : x
  2. Step 2: Convert to fraction form
    318,987.05/478,574.13 = 94,353.39/x
  3. Step 3: Cross multiply
    318,987.05x = 478,574.13 × 94,353.39
  4. Step 4: Simplify right side
    318,987.05x = 45,155,091,658.25
  5. Step 5: Solve for x
    x = 45,155,091,658.25/318,987.05
  6. Step 6: Final answer
    x = 141,557.76

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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.