Home / 250,280.76-345,393-142,848.57

Finding the Fourth Proportional to 250,280.76, 345,393 and 142,848.57

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Solution

The fourth proportional to 250,280.76, 345,393 and 142,848.57 is: 197,134.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,280.76 : 345,393 = 142,848.57 : x
  2. Step 2: Convert to fraction form
    250,280.76/345,393 = 142,848.57/x
  3. Step 3: Cross multiply
    250,280.76x = 345,393 × 142,848.57
  4. Step 4: Simplify right side
    250,280.76x = 49,338,896,138.01
  5. Step 5: Solve for x
    x = 49,338,896,138.01/250,280.76
  6. Step 6: Final answer
    x = 197,134.19

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Half scale
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Double scale
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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.