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Finding the Fourth Proportional to 526,915.80, 790,227.90 and 211,404.60

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Solution

The fourth proportional to 526,915.80, 790,227.90 and 211,404.60 is: 317,048.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,915.80 : 790,227.90 = 211,404.60 : x
  2. Step 2: Convert to fraction form
    526,915.80/790,227.90 = 211,404.60/x
  3. Step 3: Cross multiply
    526,915.80x = 790,227.90 × 211,404.60
  4. Step 4: Simplify right side
    526,915.80x = 167,057,813,108.34
  5. Step 5: Solve for x
    x = 167,057,813,108.34/526,915.80
  6. Step 6: Final answer
    x = 317,048.40

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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.