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Finding the Fourth Proportional to 421,485.62, 632,062.01 and 168,719.00

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Solution

The fourth proportional to 421,485.62, 632,062.01 and 168,719.00 is: 253,011.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,485.62 : 632,062.01 = 168,719.00 : x
  2. Step 2: Convert to fraction form
    421,485.62/632,062.01 = 168,719.00/x
  3. Step 3: Cross multiply
    421,485.62x = 632,062.01 × 168,719.00
  4. Step 4: Simplify right side
    421,485.62x = 106,640,866,261.29
  5. Step 5: Solve for x
    x = 106,640,866,261.29/421,485.62
  6. Step 6: Final answer
    x = 253,011.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.