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Finding the Fourth Proportional to 291,553.60, 402,331.53 and 162,485.20

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Solution

The fourth proportional to 291,553.60, 402,331.53 and 162,485.20 is: 224,222.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,553.60 : 402,331.53 = 162,485.20 : x
  2. Step 2: Convert to fraction form
    291,553.60/402,331.53 = 162,485.20/x
  3. Step 3: Cross multiply
    291,553.60x = 402,331.53 × 162,485.20
  4. Step 4: Simplify right side
    291,553.60x = 65,372,919,118.36
  5. Step 5: Solve for x
    x = 65,372,919,118.36/291,553.60
  6. Step 6: Final answer
    x = 224,222.65

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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.