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Finding the Fourth Proportional to 328,989.20, 493,714.20 and 210,947.60

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Solution

The fourth proportional to 328,989.20, 493,714.20 and 210,947.60 is: 316,569.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,989.20 : 493,714.20 = 210,947.60 : x
  2. Step 2: Convert to fraction form
    328,989.20/493,714.20 = 210,947.60/x
  3. Step 3: Cross multiply
    328,989.20x = 493,714.20 × 210,947.60
  4. Step 4: Simplify right side
    328,989.20x = 104,147,825,575.92
  5. Step 5: Solve for x
    x = 104,147,825,575.92/328,989.20
  6. Step 6: Final answer
    x = 316,569.13

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1.5x scale

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.