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Finding the Fourth Proportional to 403,829.40, 605,225.70 and 245,890.20

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Solution

The fourth proportional to 403,829.40, 605,225.70 and 245,890.20 is: 368,519.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,829.40 : 605,225.70 = 245,890.20 : x
  2. Step 2: Convert to fraction form
    403,829.40/605,225.70 = 245,890.20/x
  3. Step 3: Cross multiply
    403,829.40x = 605,225.70 × 245,890.20
  4. Step 4: Simplify right side
    403,829.40x = 148,819,068,418.14
  5. Step 5: Solve for x
    x = 148,819,068,418.14/403,829.40
  6. Step 6: Final answer
    x = 368,519.65

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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.