Home / 351,749.79-527,619.96-85,509.54

Finding the Fourth Proportional to 351,749.79, 527,619.96 and 85,509.54

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Solution

The fourth proportional to 351,749.79, 527,619.96 and 85,509.54 is: 128,263.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,749.79 : 527,619.96 = 85,509.54 : x
  2. Step 2: Convert to fraction form
    351,749.79/527,619.96 = 85,509.54/x
  3. Step 3: Cross multiply
    351,749.79x = 527,619.96 × 85,509.54
  4. Step 4: Simplify right side
    351,749.79x = 45,116,540,074.42
  5. Step 5: Solve for x
    x = 45,116,540,074.42/351,749.79
  6. Step 6: Final answer
    x = 128,263.16

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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.