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Finding the Fourth Proportional to 515,330.45, 772,999.77 and 211,646.37

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Solution

The fourth proportional to 515,330.45, 772,999.77 and 211,646.37 is: 317,471.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,330.45 : 772,999.77 = 211,646.37 : x
  2. Step 2: Convert to fraction form
    515,330.45/772,999.77 = 211,646.37/x
  3. Step 3: Cross multiply
    515,330.45x = 772,999.77 × 211,646.37
  4. Step 4: Simplify right side
    515,330.45x = 163,602,595,331.34
  5. Step 5: Solve for x
    x = 163,602,595,331.34/515,330.45
  6. Step 6: Final answer
    x = 317,471.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.