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Finding the Fourth Proportional to 411,807.80, 618,057.30 and 201,625.40

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Solution

The fourth proportional to 411,807.80, 618,057.30 and 201,625.40 is: 302,607.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,807.80 : 618,057.30 = 201,625.40 : x
  2. Step 2: Convert to fraction form
    411,807.80/618,057.30 = 201,625.40/x
  3. Step 3: Cross multiply
    411,807.80x = 618,057.30 × 201,625.40
  4. Step 4: Simplify right side
    411,807.80x = 124,616,050,335.42
  5. Step 5: Solve for x
    x = 124,616,050,335.42/411,807.80
  6. Step 6: Final answer
    x = 302,607.31

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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.