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Finding the Fourth Proportional to 377,347.20, 520,720.32 and 207,576.96

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Solution

The fourth proportional to 377,347.20, 520,720.32 and 207,576.96 is: 286,445.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,347.20 : 520,720.32 = 207,576.96 : x
  2. Step 2: Convert to fraction form
    377,347.20/520,720.32 = 207,576.96/x
  3. Step 3: Cross multiply
    377,347.20x = 520,720.32 × 207,576.96
  4. Step 4: Simplify right side
    377,347.20x = 108,089,541,035.83
  5. Step 5: Solve for x
    x = 108,089,541,035.83/377,347.20
  6. Step 6: Final answer
    x = 286,445.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.