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Finding the Fourth Proportional to 279,913.32, 386,343 and 177,918.93

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Solution

The fourth proportional to 279,913.32, 386,343 and 177,918.93 is: 245,567.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,913.32 : 386,343 = 177,918.93 : x
  2. Step 2: Convert to fraction form
    279,913.32/386,343 = 177,918.93/x
  3. Step 3: Cross multiply
    279,913.32x = 386,343 × 177,918.93
  4. Step 4: Simplify right side
    279,913.32x = 68,737,733,172.99
  5. Step 5: Solve for x
    x = 68,737,733,172.99/279,913.32
  6. Step 6: Final answer
    x = 245,567.93

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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.