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Finding the Fourth Proportional to 290,340.60, 400,659.66 and 163,021.56

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Solution

The fourth proportional to 290,340.60, 400,659.66 and 163,021.56 is: 224,963.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,340.60 : 400,659.66 = 163,021.56 : x
  2. Step 2: Convert to fraction form
    290,340.60/400,659.66 = 163,021.56/x
  3. Step 3: Cross multiply
    290,340.60x = 400,659.66 × 163,021.56
  4. Step 4: Simplify right side
    290,340.60x = 65,316,162,802.27
  5. Step 5: Solve for x
    x = 65,316,162,802.27/290,340.60
  6. Step 6: Final answer
    x = 224,963.93

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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.