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Finding the Fourth Proportional to 290,802.66, 401,277.06 and 161,720.22

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Solution

The fourth proportional to 290,802.66, 401,277.06 and 161,720.22 is: 223,156.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,802.66 : 401,277.06 = 161,720.22 : x
  2. Step 2: Convert to fraction form
    290,802.66/401,277.06 = 161,720.22/x
  3. Step 3: Cross multiply
    290,802.66x = 401,277.06 × 161,720.22
  4. Step 4: Simplify right side
    290,802.66x = 64,894,614,424.15
  5. Step 5: Solve for x
    x = 64,894,614,424.15/290,802.66
  6. Step 6: Final answer
    x = 223,156.88

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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.