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Finding the Fourth Proportional to 385,530, 532,359.72 and 242,529.36

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Solution

The fourth proportional to 385,530, 532,359.72 and 242,529.36 is: 334,897.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,530 : 532,359.72 = 242,529.36 : x
  2. Step 2: Convert to fraction form
    385,530/532,359.72 = 242,529.36/x
  3. Step 3: Cross multiply
    385,530x = 532,359.72 × 242,529.36
  4. Step 4: Simplify right side
    385,530x = 129,112,862,181.38
  5. Step 5: Solve for x
    x = 129,112,862,181.38/385,530
  6. Step 6: Final answer
    x = 334,897.06

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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.