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Finding the Fourth Proportional to 342,077.80, 513,116.70 and 155,453.80

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Solution

The fourth proportional to 342,077.80, 513,116.70 and 155,453.80 is: 233,180.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,077.80 : 513,116.70 = 155,453.80 : x
  2. Step 2: Convert to fraction form
    342,077.80/513,116.70 = 155,453.80/x
  3. Step 3: Cross multiply
    342,077.80x = 513,116.70 × 155,453.80
  4. Step 4: Simplify right side
    342,077.80x = 79,765,940,858.46
  5. Step 5: Solve for x
    x = 79,765,940,858.46/342,077.80
  6. Step 6: Final answer
    x = 233,180.70

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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.