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Finding the Fourth Proportional to 331,490.40, 497,235.60 and 153,938.40

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Solution

The fourth proportional to 331,490.40, 497,235.60 and 153,938.40 is: 230,907.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,490.40 : 497,235.60 = 153,938.40 : x
  2. Step 2: Convert to fraction form
    331,490.40/497,235.60 = 153,938.40/x
  3. Step 3: Cross multiply
    331,490.40x = 497,235.60 × 153,938.40
  4. Step 4: Simplify right side
    331,490.40x = 76,543,652,687.04
  5. Step 5: Solve for x
    x = 76,543,652,687.04/331,490.40
  6. Step 6: Final answer
    x = 230,907.60

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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.