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Finding the Fourth Proportional to 308,411.16, 425,443.23 and 187,589.40

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Solution

The fourth proportional to 308,411.16, 425,443.23 and 187,589.40 is: 258,773.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,411.16 : 425,443.23 = 187,589.40 : x
  2. Step 2: Convert to fraction form
    308,411.16/425,443.23 = 187,589.40/x
  3. Step 3: Cross multiply
    308,411.16x = 425,443.23 × 187,589.40
  4. Step 4: Simplify right side
    308,411.16x = 79,808,640,249.76
  5. Step 5: Solve for x
    x = 79,808,640,249.76/308,411.16
  6. Step 6: Final answer
    x = 258,773.52

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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.