Home / 318,916.11-478,385.16-168,953.52

Finding the Fourth Proportional to 318,916.11, 478,385.16 and 168,953.52

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Solution

The fourth proportional to 318,916.11, 478,385.16 and 168,953.52 is: 253,436.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,916.11 : 478,385.16 = 168,953.52 : x
  2. Step 2: Convert to fraction form
    318,916.11/478,385.16 = 168,953.52/x
  3. Step 3: Cross multiply
    318,916.11x = 478,385.16 × 168,953.52
  4. Step 4: Simplify right side
    318,916.11x = 80,824,856,697.76
  5. Step 5: Solve for x
    x = 80,824,856,697.76/318,916.11
  6. Step 6: Final answer
    x = 253,436.10

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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.