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Finding the Fourth Proportional to 371,396.88, 557,097.84 and 90,915.12

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Solution

The fourth proportional to 371,396.88, 557,097.84 and 90,915.12 is: 136,373.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,396.88 : 557,097.84 = 90,915.12 : x
  2. Step 2: Convert to fraction form
    371,396.88/557,097.84 = 90,915.12/x
  3. Step 3: Cross multiply
    371,396.88x = 557,097.84 × 90,915.12
  4. Step 4: Simplify right side
    371,396.88x = 50,648,616,975.34
  5. Step 5: Solve for x
    x = 50,648,616,975.34/371,396.88
  6. Step 6: Final answer
    x = 136,373.30

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1.5x scale

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.