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Finding the Fourth Proportional to 385,847.72, 532,457.46 and 213,758.64

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Solution

The fourth proportional to 385,847.72, 532,457.46 and 213,758.64 is: 294,980.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,847.72 : 532,457.46 = 213,758.64 : x
  2. Step 2: Convert to fraction form
    385,847.72/532,457.46 = 213,758.64/x
  3. Step 3: Cross multiply
    385,847.72x = 532,457.46 × 213,758.64
  4. Step 4: Simplify right side
    385,847.72x = 113,817,382,507.45
  5. Step 5: Solve for x
    x = 113,817,382,507.45/385,847.72
  6. Step 6: Final answer
    x = 294,980.06

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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.