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Finding the Fourth Proportional to 377,056.40, 520,324.56 and 207,289.28

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Solution

The fourth proportional to 377,056.40, 520,324.56 and 207,289.28 is: 286,051.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,056.40 : 520,324.56 = 207,289.28 : x
  2. Step 2: Convert to fraction form
    377,056.40/520,324.56 = 207,289.28/x
  3. Step 3: Cross multiply
    377,056.40x = 520,324.56 × 207,289.28
  4. Step 4: Simplify right side
    377,056.40x = 107,857,703,408.72
  5. Step 5: Solve for x
    x = 107,857,703,408.72/377,056.40
  6. Step 6: Final answer
    x = 286,051.91

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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.