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Finding the Fourth Proportional to 308,222.93, 425,346.19 and 172,256.74

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Solution

The fourth proportional to 308,222.93, 425,346.19 and 172,256.74 is: 237,713.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,222.93 : 425,346.19 = 172,256.74 : x
  2. Step 2: Convert to fraction form
    308,222.93/425,346.19 = 172,256.74/x
  3. Step 3: Cross multiply
    308,222.93x = 425,346.19 × 172,256.74
  4. Step 4: Simplify right side
    308,222.93x = 73,268,746,566.81
  5. Step 5: Solve for x
    x = 73,268,746,566.81/308,222.93
  6. Step 6: Final answer
    x = 237,713.48

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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.