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Finding the Fourth Proportional to 443,690.64, 612,293.07 and 242,486.64

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Solution

The fourth proportional to 443,690.64, 612,293.07 and 242,486.64 is: 334,631.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,690.64 : 612,293.07 = 242,486.64 : x
  2. Step 2: Convert to fraction form
    443,690.64/612,293.07 = 242,486.64/x
  3. Step 3: Cross multiply
    443,690.64x = 612,293.07 × 242,486.64
  4. Step 4: Simplify right side
    443,690.64x = 148,472,889,239.59
  5. Step 5: Solve for x
    x = 148,472,889,239.59/443,690.64
  6. Step 6: Final answer
    x = 334,631.56

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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.