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Finding the Fourth Proportional to 246,345.30, 369,530.10 and 128,247.30

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Solution

The fourth proportional to 246,345.30, 369,530.10 and 128,247.30 is: 192,377.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    246,345.30 : 369,530.10 = 128,247.30 : x
  2. Step 2: Convert to fraction form
    246,345.30/369,530.10 = 128,247.30/x
  3. Step 3: Cross multiply
    246,345.30x = 369,530.10 × 128,247.30
  4. Step 4: Simplify right side
    246,345.30x = 47,391,237,593.73
  5. Step 5: Solve for x
    x = 47,391,237,593.73/246,345.30
  6. Step 6: Final answer
    x = 192,377.28

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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.