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Finding the Fourth Proportional to 426,922.92, 640,384.38 and 300,041.64

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Solution

The fourth proportional to 426,922.92, 640,384.38 and 300,041.64 is: 450,062.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,922.92 : 640,384.38 = 300,041.64 : x
  2. Step 2: Convert to fraction form
    426,922.92/640,384.38 = 300,041.64/x
  3. Step 3: Cross multiply
    426,922.92x = 640,384.38 × 300,041.64
  4. Step 4: Simplify right side
    426,922.92x = 192,141,979,605.58
  5. Step 5: Solve for x
    x = 192,141,979,605.58/426,922.92
  6. Step 6: Final answer
    x = 450,062.46

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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.