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Finding the Fourth Proportional to 551,532.70, 761,032.26 and 309,768.96

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Solution

The fourth proportional to 551,532.70, 761,032.26 and 309,768.96 is: 427,434.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,532.70 : 761,032.26 = 309,768.96 : x
  2. Step 2: Convert to fraction form
    551,532.70/761,032.26 = 309,768.96/x
  3. Step 3: Cross multiply
    551,532.70x = 761,032.26 × 309,768.96
  4. Step 4: Simplify right side
    551,532.70x = 235,744,170,279.71
  5. Step 5: Solve for x
    x = 235,744,170,279.71/551,532.70
  6. Step 6: Final answer
    x = 427,434.62

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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.