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Finding the Fourth Proportional to 283,398, 391,089.28 and 156,073.36

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Solution

The fourth proportional to 283,398, 391,089.28 and 156,073.36 is: 215,381.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,398 : 391,089.28 = 156,073.36 : x
  2. Step 2: Convert to fraction form
    283,398/391,089.28 = 156,073.36/x
  3. Step 3: Cross multiply
    283,398x = 391,089.28 × 156,073.36
  4. Step 4: Simplify right side
    283,398x = 61,038,617,989.58
  5. Step 5: Solve for x
    x = 61,038,617,989.58/283,398
  6. Step 6: Final answer
    x = 215,381.26

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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.