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Finding the Fourth Proportional to 308,329.34, 425,563.08 and 187,445

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Solution

The fourth proportional to 308,329.34, 425,563.08 and 187,445 is: 258,715.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,329.34 : 425,563.08 = 187,445 : x
  2. Step 2: Convert to fraction form
    308,329.34/425,563.08 = 187,445/x
  3. Step 3: Cross multiply
    308,329.34x = 425,563.08 × 187,445
  4. Step 4: Simplify right side
    308,329.34x = 79,769,671,530.60
  5. Step 5: Solve for x
    x = 79,769,671,530.60/308,329.34
  6. Step 6: Final answer
    x = 258,715.80

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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.