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Finding the Fourth Proportional to 421,602.40, 632,695.20 and 303,358.60

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Solution

The fourth proportional to 421,602.40, 632,695.20 and 303,358.60 is: 455,247.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,602.40 : 632,695.20 = 303,358.60 : x
  2. Step 2: Convert to fraction form
    421,602.40/632,695.20 = 303,358.60/x
  3. Step 3: Cross multiply
    421,602.40x = 632,695.20 × 303,358.60
  4. Step 4: Simplify right side
    421,602.40x = 191,933,530,098.72
  5. Step 5: Solve for x
    x = 191,933,530,098.72/421,602.40
  6. Step 6: Final answer
    x = 455,247.72

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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.