Home / 306,136.48-422,449.68-172,009.12

Finding the Fourth Proportional to 306,136.48, 422,449.68 and 172,009.12

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Solution

The fourth proportional to 306,136.48, 422,449.68 and 172,009.12 is: 237,362.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,136.48 : 422,449.68 = 172,009.12 : x
  2. Step 2: Convert to fraction form
    306,136.48/422,449.68 = 172,009.12/x
  3. Step 3: Cross multiply
    306,136.48x = 422,449.68 × 172,009.12
  4. Step 4: Simplify right side
    306,136.48x = 72,665,197,701.08
  5. Step 5: Solve for x
    x = 72,665,197,701.08/306,136.48
  6. Step 6: Final answer
    x = 237,362.10

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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.