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Finding the Fourth Proportional to 290,076.48, 400,330.88 and 169,256.69

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Solution

The fourth proportional to 290,076.48, 400,330.88 and 169,256.69 is: 233,589.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,076.48 : 400,330.88 = 169,256.69 : x
  2. Step 2: Convert to fraction form
    290,076.48/400,330.88 = 169,256.69/x
  3. Step 3: Cross multiply
    290,076.48x = 400,330.88 × 169,256.69
  4. Step 4: Simplify right side
    290,076.48x = 67,758,679,653.59
  5. Step 5: Solve for x
    x = 67,758,679,653.59/290,076.48
  6. Step 6: Final answer
    x = 233,589.02

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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.