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Finding the Fourth Proportional to 290,160.28, 400,421.40 and 162,835.86

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Solution

The fourth proportional to 290,160.28, 400,421.40 and 162,835.86 is: 224,713.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,160.28 : 400,421.40 = 162,835.86 : x
  2. Step 2: Convert to fraction form
    290,160.28/400,421.40 = 162,835.86/x
  3. Step 3: Cross multiply
    290,160.28x = 400,421.40 × 162,835.86
  4. Step 4: Simplify right side
    290,160.28x = 65,202,963,031.40
  5. Step 5: Solve for x
    x = 65,202,963,031.40/290,160.28
  6. Step 6: Final answer
    x = 224,713.61

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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.