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Finding the Fourth Proportional to 421,797.70, 632,678.10 and 122,271.76

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Solution

The fourth proportional to 421,797.70, 632,678.10 and 122,271.76 is: 183,402.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,797.70 : 632,678.10 = 122,271.76 : x
  2. Step 2: Convert to fraction form
    421,797.70/632,678.10 = 122,271.76/x
  3. Step 3: Cross multiply
    421,797.70x = 632,678.10 × 122,271.76
  4. Step 4: Simplify right side
    421,797.70x = 77,358,664,800.46
  5. Step 5: Solve for x
    x = 77,358,664,800.46/421,797.70
  6. Step 6: Final answer
    x = 183,402.29

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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.