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Finding the Fourth Proportional to 351,354.80, 484,870.72 and 190,209.47

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Solution

The fourth proportional to 351,354.80, 484,870.72 and 190,209.47 is: 262,489.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,354.80 : 484,870.72 = 190,209.47 : x
  2. Step 2: Convert to fraction form
    351,354.80/484,870.72 = 190,209.47/x
  3. Step 3: Cross multiply
    351,354.80x = 484,870.72 × 190,209.47
  4. Step 4: Simplify right side
    351,354.80x = 92,226,999,294.32
  5. Step 5: Solve for x
    x = 92,226,999,294.32/351,354.80
  6. Step 6: Final answer
    x = 262,489.65

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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.