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Finding the Fourth Proportional to 290,752.18, 401,179.18 and 169,870.11

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Solution

The fourth proportional to 290,752.18, 401,179.18 and 169,870.11 is: 234,386.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,752.18 : 401,179.18 = 169,870.11 : x
  2. Step 2: Convert to fraction form
    290,752.18/401,179.18 = 169,870.11/x
  3. Step 3: Cross multiply
    290,752.18x = 401,179.18 × 169,870.11
  4. Step 4: Simplify right side
    290,752.18x = 68,148,352,082.35
  5. Step 5: Solve for x
    x = 68,148,352,082.35/290,752.18
  6. Step 6: Final answer
    x = 234,386.38

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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.