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Finding the Fourth Proportional to 347,490.30, 479,581.80 and 194,586.72

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Solution

The fourth proportional to 347,490.30, 479,581.80 and 194,586.72 is: 268,554.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,490.30 : 479,581.80 = 194,586.72 : x
  2. Step 2: Convert to fraction form
    347,490.30/479,581.80 = 194,586.72/x
  3. Step 3: Cross multiply
    347,490.30x = 479,581.80 × 194,586.72
  4. Step 4: Simplify right side
    347,490.30x = 93,320,249,433.70
  5. Step 5: Solve for x
    x = 93,320,249,433.70/347,490.30
  6. Step 6: Final answer
    x = 268,554.98

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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.