Home / 320,259,715.80-479,432,979.90-190,800,688.20

Finding the Fourth Proportional to 320,259,715.80, 479,432,979.90 and 190,800,688.20

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Solution

The fourth proportional to 320,259,715.80, 479,432,979.90 and 190,800,688.20 is: 285,631,123.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,259,715.80 : 479,432,979.90 = 190,800,688.20 : x
  2. Step 2: Convert to fraction form
    320,259,715.80/479,432,979.90 = 190,800,688.20/x
  3. Step 3: Cross multiply
    320,259,715.80x = 479,432,979.90 × 190,800,688.20
  4. Step 4: Simplify right side
    320,259,715.80x = 91,476,142,510,696,752
  5. Step 5: Solve for x
    x = 91,476,142,510,696,752/320,259,715.80
  6. Step 6: Final answer
    x = 285,631,123.73

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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.