Home / 283,639.54-391,420.59-156,315.25

Finding the Fourth Proportional to 283,639.54, 391,420.59 and 156,315.25

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Solution

The fourth proportional to 283,639.54, 391,420.59 and 156,315.25 is: 215,713.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,639.54 : 391,420.59 = 156,315.25 : x
  2. Step 2: Convert to fraction form
    283,639.54/391,420.59 = 156,315.25/x
  3. Step 3: Cross multiply
    283,639.54x = 391,420.59 × 156,315.25
  4. Step 4: Simplify right side
    283,639.54x = 61,185,007,381.00
  5. Step 5: Solve for x
    x = 61,185,007,381.00/283,639.54
  6. Step 6: Final answer
    x = 215,713.96

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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.