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Finding the Fourth Proportional to 250,147.65, 345,200.31 and 136,970.40

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Solution

The fourth proportional to 250,147.65, 345,200.31 and 136,970.40 is: 189,017.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,147.65 : 345,200.31 = 136,970.40 : x
  2. Step 2: Convert to fraction form
    250,147.65/345,200.31 = 136,970.40/x
  3. Step 3: Cross multiply
    250,147.65x = 345,200.31 × 136,970.40
  4. Step 4: Simplify right side
    250,147.65x = 47,282,224,540.82
  5. Step 5: Solve for x
    x = 47,282,224,540.82/250,147.65
  6. Step 6: Final answer
    x = 189,017.26

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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.