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Finding the Fourth Proportional to 400,970.43, 553,338.90 and 219,693.69

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Solution

The fourth proportional to 400,970.43, 553,338.90 and 219,693.69 is: 303,177.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,970.43 : 553,338.90 = 219,693.69 : x
  2. Step 2: Convert to fraction form
    400,970.43/553,338.90 = 219,693.69/x
  3. Step 3: Cross multiply
    400,970.43x = 553,338.90 × 219,693.69
  4. Step 4: Simplify right side
    400,970.43x = 121,565,064,761.54
  5. Step 5: Solve for x
    x = 121,565,064,761.54/400,970.43
  6. Step 6: Final answer
    x = 303,177.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.