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Finding the Fourth Proportional to 345,388.90, 476,636.16 and 194,486.98

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Solution

The fourth proportional to 345,388.90, 476,636.16 and 194,486.98 is: 268,391.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,388.90 : 476,636.16 = 194,486.98 : x
  2. Step 2: Convert to fraction form
    345,388.90/476,636.16 = 194,486.98/x
  3. Step 3: Cross multiply
    345,388.90x = 476,636.16 × 194,486.98
  4. Step 4: Simplify right side
    345,388.90x = 92,699,527,317.20
  5. Step 5: Solve for x
    x = 92,699,527,317.20/345,388.90
  6. Step 6: Final answer
    x = 268,391.74

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1.5x scale

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.