Home / 308,299.74-425,399.20-172,290.21

Finding the Fourth Proportional to 308,299.74, 425,399.20 and 172,290.21

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Solution

The fourth proportional to 308,299.74, 425,399.20 and 172,290.21 is: 237,730.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,299.74 : 425,399.20 = 172,290.21 : x
  2. Step 2: Convert to fraction form
    308,299.74/425,399.20 = 172,290.21/x
  3. Step 3: Cross multiply
    308,299.74x = 425,399.20 × 172,290.21
  4. Step 4: Simplify right side
    308,299.74x = 73,292,117,501.83
  5. Step 5: Solve for x
    x = 73,292,117,501.83/308,299.74
  6. Step 6: Final answer
    x = 237,730.07

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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.