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Finding the Fourth Proportional to 320,006.70, 480,007.01 and 130,422.56

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Solution

The fourth proportional to 320,006.70, 480,007.01 and 130,422.56 is: 195,632.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,006.70 : 480,007.01 = 130,422.56 : x
  2. Step 2: Convert to fraction form
    320,006.70/480,007.01 = 130,422.56/x
  3. Step 3: Cross multiply
    320,006.70x = 480,007.01 × 130,422.56
  4. Step 4: Simplify right side
    320,006.70x = 62,603,740,988.17
  5. Step 5: Solve for x
    x = 62,603,740,988.17/320,006.70
  6. Step 6: Final answer
    x = 195,632.59

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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.