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Finding the Fourth Proportional to 252,987.59, 349,123.21 and 145,555.47

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Solution

The fourth proportional to 252,987.59, 349,123.21 and 145,555.47 is: 200,866.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,987.59 : 349,123.21 = 145,555.47 : x
  2. Step 2: Convert to fraction form
    252,987.59/349,123.21 = 145,555.47/x
  3. Step 3: Cross multiply
    252,987.59x = 349,123.21 × 145,555.47
  4. Step 4: Simplify right side
    252,987.59x = 50,816,792,919.46
  5. Step 5: Solve for x
    x = 50,816,792,919.46/252,987.59
  6. Step 6: Final answer
    x = 200,866.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.