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Finding the Fourth Proportional to 312,656.95, 468,985.60 and 219,578.23

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Solution

The fourth proportional to 312,656.95, 468,985.60 and 219,578.23 is: 329,367.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,656.95 : 468,985.60 = 219,578.23 : x
  2. Step 2: Convert to fraction form
    312,656.95/468,985.60 = 219,578.23/x
  3. Step 3: Cross multiply
    312,656.95x = 468,985.60 × 219,578.23
  4. Step 4: Simplify right side
    312,656.95x = 102,979,025,598.56
  5. Step 5: Solve for x
    x = 102,979,025,598.56/312,656.95
  6. Step 6: Final answer
    x = 329,367.47

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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.