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Finding the Fourth Proportional to 243,978.54, 336,088.80 and 207,563.36

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Solution

The fourth proportional to 243,978.54, 336,088.80 and 207,563.36 is: 285,925.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,978.54 : 336,088.80 = 207,563.36 : x
  2. Step 2: Convert to fraction form
    243,978.54/336,088.80 = 207,563.36/x
  3. Step 3: Cross multiply
    243,978.54x = 336,088.80 × 207,563.36
  4. Step 4: Simplify right side
    243,978.54x = 69,759,718,905.92
  5. Step 5: Solve for x
    x = 69,759,718,905.92/243,978.54
  6. Step 6: Final answer
    x = 285,925.63

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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.