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Finding the Fourth Proportional to 421,497.90, 632,246.85 and 253,536.30

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Solution

The fourth proportional to 421,497.90, 632,246.85 and 253,536.30 is: 380,304.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,497.90 : 632,246.85 = 253,536.30 : x
  2. Step 2: Convert to fraction form
    421,497.90/632,246.85 = 253,536.30/x
  3. Step 3: Cross multiply
    421,497.90x = 632,246.85 × 253,536.30
  4. Step 4: Simplify right side
    421,497.90x = 160,297,527,035.66
  5. Step 5: Solve for x
    x = 160,297,527,035.66/421,497.90
  6. Step 6: Final answer
    x = 380,304.45

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1.5x scale

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.