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Finding the Fourth Proportional to 491,431.60, 736,855.80 and 255,235.60

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Solution

The fourth proportional to 491,431.60, 736,855.80 and 255,235.60 is: 382,701.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,431.60 : 736,855.80 = 255,235.60 : x
  2. Step 2: Convert to fraction form
    491,431.60/736,855.80 = 255,235.60/x
  3. Step 3: Cross multiply
    491,431.60x = 736,855.80 × 255,235.60
  4. Step 4: Simplify right side
    491,431.60x = 188,071,832,226.48
  5. Step 5: Solve for x
    x = 188,071,832,226.48/491,431.60
  6. Step 6: Final answer
    x = 382,701.95

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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.