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Finding the Fourth Proportional to 369,720.75, 510,219.56 and 208,575.30

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Solution

The fourth proportional to 369,720.75, 510,219.56 and 208,575.30 is: 287,836.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,720.75 : 510,219.56 = 208,575.30 : x
  2. Step 2: Convert to fraction form
    369,720.75/510,219.56 = 208,575.30/x
  3. Step 3: Cross multiply
    369,720.75x = 510,219.56 × 208,575.30
  4. Step 4: Simplify right side
    369,720.75x = 106,419,197,792.87
  5. Step 5: Solve for x
    x = 106,419,197,792.87/369,720.75
  6. Step 6: Final answer
    x = 287,836.69

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1.5x scale

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.