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Finding the Fourth Proportional to 385,660.40, 532,147.96 and 242,318.88

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Solution

The fourth proportional to 385,660.40, 532,147.96 and 242,318.88 is: 334,360.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,660.40 : 532,147.96 = 242,318.88 : x
  2. Step 2: Convert to fraction form
    385,660.40/532,147.96 = 242,318.88/x
  3. Step 3: Cross multiply
    385,660.40x = 532,147.96 × 242,318.88
  4. Step 4: Simplify right side
    385,660.40x = 128,949,497,661.49
  5. Step 5: Solve for x
    x = 128,949,497,661.49/385,660.40
  6. Step 6: Final answer
    x = 334,360.22

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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.