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Finding the Fourth Proportional to 377,175.64, 520,497.76 and 280,810

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Solution

The fourth proportional to 377,175.64, 520,497.76 and 280,810 is: 387,514.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,175.64 : 520,497.76 = 280,810 : x
  2. Step 2: Convert to fraction form
    377,175.64/520,497.76 = 280,810/x
  3. Step 3: Cross multiply
    377,175.64x = 520,497.76 × 280,810
  4. Step 4: Simplify right side
    377,175.64x = 146,160,975,985.60
  5. Step 5: Solve for x
    x = 146,160,975,985.60/377,175.64
  6. Step 6: Final answer
    x = 387,514.36

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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.