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Finding the Fourth Proportional to 515,655.72, 773,333.82 and 216,128.16

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Solution

The fourth proportional to 515,655.72, 773,333.82 and 216,128.16 is: 324,129.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,655.72 : 773,333.82 = 216,128.16 : x
  2. Step 2: Convert to fraction form
    515,655.72/773,333.82 = 216,128.16/x
  3. Step 3: Cross multiply
    515,655.72x = 773,333.82 × 216,128.16
  4. Step 4: Simplify right side
    515,655.72x = 167,139,215,582.37
  5. Step 5: Solve for x
    x = 167,139,215,582.37/515,655.72
  6. Step 6: Final answer
    x = 324,129.47

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1.5x scale

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.