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Finding the Fourth Proportional to 491,428.60, 736,851.30 and 255,232.60

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Solution

The fourth proportional to 491,428.60, 736,851.30 and 255,232.60 is: 382,697.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,428.60 : 736,851.30 = 255,232.60 : x
  2. Step 2: Convert to fraction form
    491,428.60/736,851.30 = 255,232.60/x
  3. Step 3: Cross multiply
    491,428.60x = 736,851.30 × 255,232.60
  4. Step 4: Simplify right side
    491,428.60x = 188,068,473,112.38
  5. Step 5: Solve for x
    x = 188,068,473,112.38/491,428.60
  6. Step 6: Final answer
    x = 382,697.45

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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.