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Finding the Fourth Proportional to 322,543.60, 483,815.40 and 286,908.40

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Solution

The fourth proportional to 322,543.60, 483,815.40 and 286,908.40 is: 430,362.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,543.60 : 483,815.40 = 286,908.40 : x
  2. Step 2: Convert to fraction form
    322,543.60/483,815.40 = 286,908.40/x
  3. Step 3: Cross multiply
    322,543.60x = 483,815.40 × 286,908.40
  4. Step 4: Simplify right side
    322,543.60x = 138,810,702,309.36
  5. Step 5: Solve for x
    x = 138,810,702,309.36/322,543.60
  6. Step 6: Final answer
    x = 430,362.60

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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.