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Finding the Fourth Proportional to 377,491.64, 520,916.81 and 207,725.76

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Solution

The fourth proportional to 377,491.64, 520,916.81 and 207,725.76 is: 286,649.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,491.64 : 520,916.81 = 207,725.76 : x
  2. Step 2: Convert to fraction form
    377,491.64/520,916.81 = 207,725.76/x
  3. Step 3: Cross multiply
    377,491.64x = 520,916.81 × 207,725.76
  4. Step 4: Simplify right side
    377,491.64x = 108,207,839,215.40
  5. Step 5: Solve for x
    x = 108,207,839,215.40/377,491.64
  6. Step 6: Final answer
    x = 286,649.63

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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.