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Finding the Fourth Proportional to 290,173.89, 400,479.08 and 162,856.47

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Solution

The fourth proportional to 290,173.89, 400,479.08 and 162,856.47 is: 224,763.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,173.89 : 400,479.08 = 162,856.47 : x
  2. Step 2: Convert to fraction form
    290,173.89/400,479.08 = 162,856.47/x
  3. Step 3: Cross multiply
    290,173.89x = 400,479.08 × 162,856.47
  4. Step 4: Simplify right side
    290,173.89x = 65,220,608,463.37
  5. Step 5: Solve for x
    x = 65,220,608,463.37/290,173.89
  6. Step 6: Final answer
    x = 224,763.88

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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.