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Finding the Fourth Proportional to 403,400.40, 605,230.20 and 270,430.80

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Solution

The fourth proportional to 403,400.40, 605,230.20 and 270,430.80 is: 405,733.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,400.40 : 605,230.20 = 270,430.80 : x
  2. Step 2: Convert to fraction form
    403,400.40/605,230.20 = 270,430.80/x
  3. Step 3: Cross multiply
    403,400.40x = 605,230.20 × 270,430.80
  4. Step 4: Simplify right side
    403,400.40x = 163,672,887,170.16
  5. Step 5: Solve for x
    x = 163,672,887,170.16/403,400.40
  6. Step 6: Final answer
    x = 405,733.08

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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.