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Finding the Fourth Proportional to 403,253.40, 604,880.10 and 206,645.40

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Solution

The fourth proportional to 403,253.40, 604,880.10 and 206,645.40 is: 309,968.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,253.40 : 604,880.10 = 206,645.40 : x
  2. Step 2: Convert to fraction form
    403,253.40/604,880.10 = 206,645.40/x
  3. Step 3: Cross multiply
    403,253.40x = 604,880.10 × 206,645.40
  4. Step 4: Simplify right side
    403,253.40x = 124,995,690,216.54
  5. Step 5: Solve for x
    x = 124,995,690,216.54/403,253.40
  6. Step 6: Final answer
    x = 309,968.10

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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.