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Finding the Fourth Proportional to 385,606.68, 532,157.58 and 242,313.72

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Solution

The fourth proportional to 385,606.68, 532,157.58 and 242,313.72 is: 334,405.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,606.68 : 532,157.58 = 242,313.72 : x
  2. Step 2: Convert to fraction form
    385,606.68/532,157.58 = 242,313.72/x
  3. Step 3: Cross multiply
    385,606.68x = 532,157.58 × 242,313.72
  4. Step 4: Simplify right side
    385,606.68x = 128,949,082,836.00
  5. Step 5: Solve for x
    x = 128,949,082,836.00/385,606.68
  6. Step 6: Final answer
    x = 334,405.73

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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.