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Finding the Fourth Proportional to 318,616.31, 478,006.47 and 93,967.67

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Solution

The fourth proportional to 318,616.31, 478,006.47 and 93,967.67 is: 140,975.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,616.31 : 478,006.47 = 93,967.67 : x
  2. Step 2: Convert to fraction form
    318,616.31/478,006.47 = 93,967.67/x
  3. Step 3: Cross multiply
    318,616.31x = 478,006.47 × 93,967.67
  4. Step 4: Simplify right side
    318,616.31x = 44,917,151,840.79
  5. Step 5: Solve for x
    x = 44,917,151,840.79/318,616.31
  6. Step 6: Final answer
    x = 140,975.68

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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.