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Finding the Fourth Proportional to 426,533.73, 640,194.26 and 216,319.29

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Solution

The fourth proportional to 426,533.73, 640,194.26 and 216,319.29 is: 324,678.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,533.73 : 640,194.26 = 216,319.29 : x
  2. Step 2: Convert to fraction form
    426,533.73/640,194.26 = 216,319.29/x
  3. Step 3: Cross multiply
    426,533.73x = 640,194.26 × 216,319.29
  4. Step 4: Simplify right side
    426,533.73x = 138,486,366,703.68
  5. Step 5: Solve for x
    x = 138,486,366,703.68/426,533.73
  6. Step 6: Final answer
    x = 324,678.58

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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.