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Finding the Fourth Proportional to 308,446.48, 425,632.74 and 187,570.96

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Solution

The fourth proportional to 308,446.48, 425,632.74 and 187,570.96 is: 258,833.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,446.48 : 425,632.74 = 187,570.96 : x
  2. Step 2: Convert to fraction form
    308,446.48/425,632.74 = 187,570.96/x
  3. Step 3: Cross multiply
    308,446.48x = 425,632.74 × 187,570.96
  4. Step 4: Simplify right side
    308,446.48x = 79,836,341,649.23
  5. Step 5: Solve for x
    x = 79,836,341,649.23/308,446.48
  6. Step 6: Final answer
    x = 258,833.69

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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.