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Finding the Fourth Proportional to 318,615.81, 478,005.72 and 93,967.17

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Solution

The fourth proportional to 318,615.81, 478,005.72 and 93,967.17 is: 140,974.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,615.81 : 478,005.72 = 93,967.17 : x
  2. Step 2: Convert to fraction form
    318,615.81/478,005.72 = 93,967.17/x
  3. Step 3: Cross multiply
    318,615.81x = 478,005.72 × 93,967.17
  4. Step 4: Simplify right side
    318,615.81x = 44,916,844,752.21
  5. Step 5: Solve for x
    x = 44,916,844,752.21/318,615.81
  6. Step 6: Final answer
    x = 140,974.94

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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.