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Finding the Fourth Proportional to 290,259.80, 400,507.98 and 162,940.76

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Solution

The fourth proportional to 290,259.80, 400,507.98 and 162,940.76 is: 224,829.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,259.80 : 400,507.98 = 162,940.76 : x
  2. Step 2: Convert to fraction form
    290,259.80/400,507.98 = 162,940.76/x
  3. Step 3: Cross multiply
    290,259.80x = 400,507.98 × 162,940.76
  4. Step 4: Simplify right side
    290,259.80x = 65,259,074,647.26
  5. Step 5: Solve for x
    x = 65,259,074,647.26/290,259.80
  6. Step 6: Final answer
    x = 224,829.88

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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.