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Finding the Fourth Proportional to 408,895.02, 613,440.90 and 172,305.36

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Solution

The fourth proportional to 408,895.02, 613,440.90 and 172,305.36 is: 258,499.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,895.02 : 613,440.90 = 172,305.36 : x
  2. Step 2: Convert to fraction form
    408,895.02/613,440.90 = 172,305.36/x
  3. Step 3: Cross multiply
    408,895.02x = 613,440.90 × 172,305.36
  4. Step 4: Simplify right side
    408,895.02x = 105,699,155,113.22
  5. Step 5: Solve for x
    x = 105,699,155,113.22/408,895.02
  6. Step 6: Final answer
    x = 258,499.49

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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.