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Finding the Fourth Proportional to 515,590.62, 711,600.54 and 300,730.68

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Solution

The fourth proportional to 515,590.62, 711,600.54 and 300,730.68 is: 415,058.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,590.62 : 711,600.54 = 300,730.68 : x
  2. Step 2: Convert to fraction form
    515,590.62/711,600.54 = 300,730.68/x
  3. Step 3: Cross multiply
    515,590.62x = 711,600.54 × 300,730.68
  4. Step 4: Simplify right side
    515,590.62x = 214,000,114,282.57
  5. Step 5: Solve for x
    x = 214,000,114,282.57/515,590.62
  6. Step 6: Final answer
    x = 415,058.20

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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.