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Finding the Fourth Proportional to 230,012.40, 345,034.80 and 130,220.40

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Solution

The fourth proportional to 230,012.40, 345,034.80 and 130,220.40 is: 195,339.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,012.40 : 345,034.80 = 130,220.40 : x
  2. Step 2: Convert to fraction form
    230,012.40/345,034.80 = 130,220.40/x
  3. Step 3: Cross multiply
    230,012.40x = 345,034.80 × 130,220.40
  4. Step 4: Simplify right side
    230,012.40x = 44,930,569,669.92
  5. Step 5: Solve for x
    x = 44,930,569,669.92/230,012.40
  6. Step 6: Final answer
    x = 195,339.77

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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.