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Finding the Fourth Proportional to 551,544.08, 761,047.92 and 309,780.32

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Solution

The fourth proportional to 551,544.08, 761,047.92 and 309,780.32 is: 427,450.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,544.08 : 761,047.92 = 309,780.32 : x
  2. Step 2: Convert to fraction form
    551,544.08/761,047.92 = 309,780.32/x
  3. Step 3: Cross multiply
    551,544.08x = 761,047.92 × 309,780.32
  4. Step 4: Simplify right side
    551,544.08x = 235,757,668,192.93
  5. Step 5: Solve for x
    x = 235,757,668,192.93/551,544.08
  6. Step 6: Final answer
    x = 427,450.27

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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.