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Finding the Fourth Proportional to 551,808.54, 761,515.83 and 310,095.90

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Solution

The fourth proportional to 551,808.54, 761,515.83 and 310,095.90 is: 427,943.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,808.54 : 761,515.83 = 310,095.90 : x
  2. Step 2: Convert to fraction form
    551,808.54/761,515.83 = 310,095.90/x
  3. Step 3: Cross multiply
    551,808.54x = 761,515.83 × 310,095.90
  4. Step 4: Simplify right side
    551,808.54x = 236,142,936,668.10
  5. Step 5: Solve for x
    x = 236,142,936,668.10/551,808.54
  6. Step 6: Final answer
    x = 427,943.61

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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.