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Finding the Fourth Proportional to 308,320.34, 425,550.66 and 187,436

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Solution

The fourth proportional to 308,320.34, 425,550.66 and 187,436 is: 258,703.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,320.34 : 425,550.66 = 187,436 : x
  2. Step 2: Convert to fraction form
    308,320.34/425,550.66 = 187,436/x
  3. Step 3: Cross multiply
    308,320.34x = 425,550.66 × 187,436
  4. Step 4: Simplify right side
    308,320.34x = 79,763,513,507.76
  5. Step 5: Solve for x
    x = 79,763,513,507.76/308,320.34
  6. Step 6: Final answer
    x = 258,703.38

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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.