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Finding the Fourth Proportional to 371,885.34, 557,823.15 and 91,405.02

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Solution

The fourth proportional to 371,885.34, 557,823.15 and 91,405.02 is: 137,106.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,885.34 : 557,823.15 = 91,405.02 : x
  2. Step 2: Convert to fraction form
    371,885.34/557,823.15 = 91,405.02/x
  3. Step 3: Cross multiply
    371,885.34x = 557,823.15 × 91,405.02
  4. Step 4: Simplify right side
    371,885.34x = 50,987,836,182.21
  5. Step 5: Solve for x
    x = 50,987,836,182.21/371,885.34
  6. Step 6: Final answer
    x = 137,106.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.