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Finding the Fourth Proportional to 346,645.80, 519,968.70 and 196,828.20

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Solution

The fourth proportional to 346,645.80, 519,968.70 and 196,828.20 is: 295,242.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,645.80 : 519,968.70 = 196,828.20 : x
  2. Step 2: Convert to fraction form
    346,645.80/519,968.70 = 196,828.20/x
  3. Step 3: Cross multiply
    346,645.80x = 519,968.70 × 196,828.20
  4. Step 4: Simplify right side
    346,645.80x = 102,344,503,277.34
  5. Step 5: Solve for x
    x = 102,344,503,277.34/346,645.80
  6. Step 6: Final answer
    x = 295,242.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.