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Finding the Fourth Proportional to 290,699.90, 401,275.47 and 169,880.44

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Solution

The fourth proportional to 290,699.90, 401,275.47 and 169,880.44 is: 234,499.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,699.90 : 401,275.47 = 169,880.44 : x
  2. Step 2: Convert to fraction form
    290,699.90/401,275.47 = 169,880.44/x
  3. Step 3: Cross multiply
    290,699.90x = 401,275.47 × 169,880.44
  4. Step 4: Simplify right side
    290,699.90x = 68,168,853,404.81
  5. Step 5: Solve for x
    x = 68,168,853,404.81/290,699.90
  6. Step 6: Final answer
    x = 234,499.06

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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.