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Finding the Fourth Proportional to 385,266.60, 577,899.90 and 259,295.40

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Solution

The fourth proportional to 385,266.60, 577,899.90 and 259,295.40 is: 388,943.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,266.60 : 577,899.90 = 259,295.40 : x
  2. Step 2: Convert to fraction form
    385,266.60/577,899.90 = 259,295.40/x
  3. Step 3: Cross multiply
    385,266.60x = 577,899.90 × 259,295.40
  4. Step 4: Simplify right side
    385,266.60x = 149,846,785,730.46
  5. Step 5: Solve for x
    x = 149,846,785,730.46/385,266.60
  6. Step 6: Final answer
    x = 388,943.10

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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.