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Finding the Fourth Proportional to 290,187.84, 400,344.76 and 167,599.20

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Solution

The fourth proportional to 290,187.84, 400,344.76 and 167,599.20 is: 231,220.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,187.84 : 400,344.76 = 167,599.20 : x
  2. Step 2: Convert to fraction form
    290,187.84/400,344.76 = 167,599.20/x
  3. Step 3: Cross multiply
    290,187.84x = 400,344.76 × 167,599.20
  4. Step 4: Simplify right side
    290,187.84x = 67,097,461,500.19
  5. Step 5: Solve for x
    x = 67,097,461,500.19/290,187.84
  6. Step 6: Final answer
    x = 231,220.79

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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.