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Finding the Fourth Proportional to 421,389.39, 632,001.63 and 350,765.70

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Solution

The fourth proportional to 421,389.39, 632,001.63 and 350,765.70 is: 526,079.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,389.39 : 632,001.63 = 350,765.70 : x
  2. Step 2: Convert to fraction form
    421,389.39/632,001.63 = 350,765.70/x
  3. Step 3: Cross multiply
    421,389.39x = 632,001.63 × 350,765.70
  4. Step 4: Simplify right side
    421,389.39x = 221,684,494,148.09
  5. Step 5: Solve for x
    x = 221,684,494,148.09/421,389.39
  6. Step 6: Final answer
    x = 526,079.91

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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.