Home / 217,820.05-326,746.28-77,560.45

Finding the Fourth Proportional to 217,820.05, 326,746.28 and 77,560.45

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Solution

The fourth proportional to 217,820.05, 326,746.28 and 77,560.45 is: 116,346.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,820.05 : 326,746.28 = 77,560.45 : x
  2. Step 2: Convert to fraction form
    217,820.05/326,746.28 = 77,560.45/x
  3. Step 3: Cross multiply
    217,820.05x = 326,746.28 × 77,560.45
  4. Step 4: Simplify right side
    217,820.05x = 25,342,588,124.82
  5. Step 5: Solve for x
    x = 25,342,588,124.82/217,820.05
  6. Step 6: Final answer
    x = 116,346.44

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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.