Home / 319,288.20-478,529.10-161,560.20

Finding the Fourth Proportional to 319,288.20, 478,529.10 and 161,560.20

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Solution

The fourth proportional to 319,288.20, 478,529.10 and 161,560.20 is: 242,136.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,288.20 : 478,529.10 = 161,560.20 : x
  2. Step 2: Convert to fraction form
    319,288.20/478,529.10 = 161,560.20/x
  3. Step 3: Cross multiply
    319,288.20x = 478,529.10 × 161,560.20
  4. Step 4: Simplify right side
    319,288.20x = 77,311,257,101.82
  5. Step 5: Solve for x
    x = 77,311,257,101.82/319,288.20
  6. Step 6: Final answer
    x = 242,136.28

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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.