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Finding the Fourth Proportional to 243,656.08, 336,059.22 and 209,721.40

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Solution

The fourth proportional to 243,656.08, 336,059.22 and 209,721.40 is: 289,255.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,656.08 : 336,059.22 = 209,721.40 : x
  2. Step 2: Convert to fraction form
    243,656.08/336,059.22 = 209,721.40/x
  3. Step 3: Cross multiply
    243,656.08x = 336,059.22 × 209,721.40
  4. Step 4: Simplify right side
    243,656.08x = 70,478,810,101.31
  5. Step 5: Solve for x
    x = 70,478,810,101.31/243,656.08
  6. Step 6: Final answer
    x = 289,255.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.