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Finding the Fourth Proportional to 308,302.56, 425,526.17 and 187,418.25

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Solution

The fourth proportional to 308,302.56, 425,526.17 and 187,418.25 is: 258,678.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,302.56 : 425,526.17 = 187,418.25 : x
  2. Step 2: Convert to fraction form
    308,302.56/425,526.17 = 187,418.25/x
  3. Step 3: Cross multiply
    308,302.56x = 425,526.17 × 187,418.25
  4. Step 4: Simplify right side
    308,302.56x = 79,751,369,173.51
  5. Step 5: Solve for x
    x = 79,751,369,173.51/308,302.56
  6. Step 6: Final answer
    x = 258,678.91

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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.