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Finding the Fourth Proportional to 505,159.62, 697,118.85 and 278,803.50

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Solution

The fourth proportional to 505,159.62, 697,118.85 and 278,803.50 is: 384,748.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,159.62 : 697,118.85 = 278,803.50 : x
  2. Step 2: Convert to fraction form
    505,159.62/697,118.85 = 278,803.50/x
  3. Step 3: Cross multiply
    505,159.62x = 697,118.85 × 278,803.50
  4. Step 4: Simplify right side
    505,159.62x = 194,359,175,295.98
  5. Step 5: Solve for x
    x = 194,359,175,295.98/505,159.62
  6. Step 6: Final answer
    x = 384,748.04

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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.