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Finding the Fourth Proportional to 246,939, 340,853.58 and 157,515

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Solution

The fourth proportional to 246,939, 340,853.58 and 157,515 is: 217,420.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    246,939 : 340,853.58 = 157,515 : x
  2. Step 2: Convert to fraction form
    246,939/340,853.58 = 157,515/x
  3. Step 3: Cross multiply
    246,939x = 340,853.58 × 157,515
  4. Step 4: Simplify right side
    246,939x = 53,689,551,653.70
  5. Step 5: Solve for x
    x = 53,689,551,653.70/246,939
  6. Step 6: Final answer
    x = 217,420.30

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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.