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Finding the Fourth Proportional to 505,225.44, 697,216.80 and 278,870.88

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Solution

The fourth proportional to 505,225.44, 697,216.80 and 278,870.88 is: 384,844.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,225.44 : 697,216.80 = 278,870.88 : x
  2. Step 2: Convert to fraction form
    505,225.44/697,216.80 = 278,870.88/x
  3. Step 3: Cross multiply
    505,225.44x = 697,216.80 × 278,870.88
  4. Step 4: Simplify right side
    505,225.44x = 194,433,462,566.78
  5. Step 5: Solve for x
    x = 194,433,462,566.78/505,225.44
  6. Step 6: Final answer
    x = 384,844.96

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1.5x scale

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.