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Finding the Fourth Proportional to 291,422.61, 402,183.79 and 162,369.57

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Solution

The fourth proportional to 291,422.61, 402,183.79 and 162,369.57 is: 224,081.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,422.61 : 402,183.79 = 162,369.57 : x
  2. Step 2: Convert to fraction form
    291,422.61/402,183.79 = 162,369.57/x
  3. Step 3: Cross multiply
    291,422.61x = 402,183.79 × 162,369.57
  4. Step 4: Simplify right side
    291,422.61x = 65,302,409,043.27
  5. Step 5: Solve for x
    x = 65,302,409,043.27/291,422.61
  6. Step 6: Final answer
    x = 224,081.48

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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.