Home / 318,988.20-478,367.10-161,164.20

Finding the Fourth Proportional to 318,988.20, 478,367.10 and 161,164.20

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Solution

The fourth proportional to 318,988.20, 478,367.10 and 161,164.20 is: 241,688.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,988.20 : 478,367.10 = 161,164.20 : x
  2. Step 2: Convert to fraction form
    318,988.20/478,367.10 = 161,164.20/x
  3. Step 3: Cross multiply
    318,988.20x = 478,367.10 × 161,164.20
  4. Step 4: Simplify right side
    318,988.20x = 77,095,650,977.82
  5. Step 5: Solve for x
    x = 77,095,650,977.82/318,988.20
  6. Step 6: Final answer
    x = 241,688.10

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1.5x scale

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.