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Finding the Fourth Proportional to 290,079.48, 400,335.02 and 169,259.69

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Solution

The fourth proportional to 290,079.48, 400,335.02 and 169,259.69 is: 233,593.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,079.48 : 400,335.02 = 169,259.69 : x
  2. Step 2: Convert to fraction form
    290,079.48/400,335.02 = 169,259.69/x
  3. Step 3: Cross multiply
    290,079.48x = 400,335.02 × 169,259.69
  4. Step 4: Simplify right side
    290,079.48x = 67,760,581,381.34
  5. Step 5: Solve for x
    x = 67,760,581,381.34/290,079.48
  6. Step 6: Final answer
    x = 233,593.16

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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.