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Finding the Fourth Proportional to 515,434.50, 711,610.65 and 336,897.54

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Solution

The fourth proportional to 515,434.50, 711,610.65 and 336,897.54 is: 465,121.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,434.50 : 711,610.65 = 336,897.54 : x
  2. Step 2: Convert to fraction form
    515,434.50/711,610.65 = 336,897.54/x
  3. Step 3: Cross multiply
    515,434.50x = 711,610.65 × 336,897.54
  4. Step 4: Simplify right side
    515,434.50x = 239,739,877,422.80
  5. Step 5: Solve for x
    x = 239,739,877,422.80/515,434.50
  6. Step 6: Final answer
    x = 465,121.91

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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.