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Finding the Fourth Proportional to 421,066.83, 631,602.98 and 168,368.55

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Solution

The fourth proportional to 421,066.83, 631,602.98 and 168,368.55 is: 252,553.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,066.83 : 631,602.98 = 168,368.55 : x
  2. Step 2: Convert to fraction form
    421,066.83/631,602.98 = 168,368.55/x
  3. Step 3: Cross multiply
    421,066.83x = 631,602.98 × 168,368.55
  4. Step 4: Simplify right side
    421,066.83x = 106,342,077,076.44
  5. Step 5: Solve for x
    x = 106,342,077,076.44/421,066.83
  6. Step 6: Final answer
    x = 252,553.92

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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.