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Finding the Fourth Proportional to 385,217.60, 577,826.40 and 259,246.40

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Solution

The fourth proportional to 385,217.60, 577,826.40 and 259,246.40 is: 388,869.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,217.60 : 577,826.40 = 259,246.40 : x
  2. Step 2: Convert to fraction form
    385,217.60/577,826.40 = 259,246.40/x
  3. Step 3: Cross multiply
    385,217.60x = 577,826.40 × 259,246.40
  4. Step 4: Simplify right side
    385,217.60x = 149,799,414,024.96
  5. Step 5: Solve for x
    x = 149,799,414,024.96/385,217.60
  6. Step 6: Final answer
    x = 388,869.60

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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.