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Finding the Fourth Proportional to 246,718.40, 369,991.20 and 128,350.40

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Solution

The fourth proportional to 246,718.40, 369,991.20 and 128,350.40 is: 192,480.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    246,718.40 : 369,991.20 = 128,350.40 : x
  2. Step 2: Convert to fraction form
    246,718.40/369,991.20 = 128,350.40/x
  3. Step 3: Cross multiply
    246,718.40x = 369,991.20 × 128,350.40
  4. Step 4: Simplify right side
    246,718.40x = 47,488,518,516.48
  5. Step 5: Solve for x
    x = 47,488,518,516.48/246,718.40
  6. Step 6: Final answer
    x = 192,480.65

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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.