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Finding the Fourth Proportional to 377,467.50, 520,908.80 and 207,705.28

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Solution

The fourth proportional to 377,467.50, 520,908.80 and 207,705.28 is: 286,635.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,467.50 : 520,908.80 = 207,705.28 : x
  2. Step 2: Convert to fraction form
    377,467.50/520,908.80 = 207,705.28/x
  3. Step 3: Cross multiply
    377,467.50x = 520,908.80 × 207,705.28
  4. Step 4: Simplify right side
    377,467.50x = 108,195,508,158.46
  5. Step 5: Solve for x
    x = 108,195,508,158.46/377,467.50
  6. Step 6: Final answer
    x = 286,635.29

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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.