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Finding the Fourth Proportional to 308,300.75, 425,336.91 and 187,397.93

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Solution

The fourth proportional to 308,300.75, 425,336.91 and 187,397.93 is: 258,537.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,300.75 : 425,336.91 = 187,397.93 : x
  2. Step 2: Convert to fraction form
    308,300.75/425,336.91 = 187,397.93/x
  3. Step 3: Cross multiply
    308,300.75x = 425,336.91 × 187,397.93
  4. Step 4: Simplify right side
    308,300.75x = 79,707,254,359.91
  5. Step 5: Solve for x
    x = 79,707,254,359.91/308,300.75
  6. Step 6: Final answer
    x = 258,537.34

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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.