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Finding the Fourth Proportional to 250,397.81, 345,668.64 and 142,947.05

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Solution

The fourth proportional to 250,397.81, 345,668.64 and 142,947.05 is: 197,335.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,397.81 : 345,668.64 = 142,947.05 : x
  2. Step 2: Convert to fraction form
    250,397.81/345,668.64 = 142,947.05/x
  3. Step 3: Cross multiply
    250,397.81x = 345,668.64 × 142,947.05
  4. Step 4: Simplify right side
    250,397.81x = 49,412,312,365.51
  5. Step 5: Solve for x
    x = 49,412,312,365.51/250,397.81
  6. Step 6: Final answer
    x = 197,335.24

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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.