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Finding the Fourth Proportional to 556,990.16, 768,662.26 and 302,357.75

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Solution

The fourth proportional to 556,990.16, 768,662.26 and 302,357.75 is: 417,262.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,990.16 : 768,662.26 = 302,357.75 : x
  2. Step 2: Convert to fraction form
    556,990.16/768,662.26 = 302,357.75/x
  3. Step 3: Cross multiply
    556,990.16x = 768,662.26 × 302,357.75
  4. Step 4: Simplify right side
    556,990.16x = 232,410,986,844.31
  5. Step 5: Solve for x
    x = 232,410,986,844.31/556,990.16
  6. Step 6: Final answer
    x = 417,262.29

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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.