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Finding the Fourth Proportional to 421,726.40, 631,889.76 and 296,804.96

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Solution

The fourth proportional to 421,726.40, 631,889.76 and 296,804.96 is: 444,714.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,726.40 : 631,889.76 = 296,804.96 : x
  2. Step 2: Convert to fraction form
    421,726.40/631,889.76 = 296,804.96/x
  3. Step 3: Cross multiply
    421,726.40x = 631,889.76 × 296,804.96
  4. Step 4: Simplify right side
    421,726.40x = 187,548,014,941.21
  5. Step 5: Solve for x
    x = 187,548,014,941.21/421,726.40
  6. Step 6: Final answer
    x = 444,714.90

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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.