Home / 288,455.48-398,068.55-161,131.08

Finding the Fourth Proportional to 288,455.48, 398,068.55 and 161,131.08

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Solution

The fourth proportional to 288,455.48, 398,068.55 and 161,131.08 is: 222,360.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,455.48 : 398,068.55 = 161,131.08 : x
  2. Step 2: Convert to fraction form
    288,455.48/398,068.55 = 161,131.08/x
  3. Step 3: Cross multiply
    288,455.48x = 398,068.55 × 161,131.08
  4. Step 4: Simplify right side
    288,455.48x = 64,141,213,681.36
  5. Step 5: Solve for x
    x = 64,141,213,681.36/288,455.48
  6. Step 6: Final answer
    x = 222,360.88

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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.