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Finding the Fourth Proportional to 345,878.50, 477,319.62 and 194,975.50

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Solution

The fourth proportional to 345,878.50, 477,319.62 and 194,975.50 is: 269,070.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,878.50 : 477,319.62 = 194,975.50 : x
  2. Step 2: Convert to fraction form
    345,878.50/477,319.62 = 194,975.50/x
  3. Step 3: Cross multiply
    345,878.50x = 477,319.62 × 194,975.50
  4. Step 4: Simplify right side
    345,878.50x = 93,065,631,569.31
  5. Step 5: Solve for x
    x = 93,065,631,569.31/345,878.50
  6. Step 6: Final answer
    x = 269,070.30

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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.