Home / 290,905.57-401,498.99-168,380.20

Finding the Fourth Proportional to 290,905.57, 401,498.99 and 168,380.20

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Solution

The fourth proportional to 290,905.57, 401,498.99 and 168,380.20 is: 232,393.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,905.57 : 401,498.99 = 168,380.20 : x
  2. Step 2: Convert to fraction form
    290,905.57/401,498.99 = 168,380.20/x
  3. Step 3: Cross multiply
    290,905.57x = 401,498.99 × 168,380.20
  4. Step 4: Simplify right side
    290,905.57x = 67,604,479,394.10
  5. Step 5: Solve for x
    x = 67,604,479,394.10/290,905.57
  6. Step 6: Final answer
    x = 232,393.21

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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.