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Finding the Fourth Proportional to 210,053.64, 315,078.84 and 52,281.03

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Solution

The fourth proportional to 210,053.64, 315,078.84 and 52,281.03 is: 78,421.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,053.64 : 315,078.84 = 52,281.03 : x
  2. Step 2: Convert to fraction form
    210,053.64/315,078.84 = 52,281.03/x
  3. Step 3: Cross multiply
    210,053.64x = 315,078.84 × 52,281.03
  4. Step 4: Simplify right side
    210,053.64x = 16,472,646,286.41
  5. Step 5: Solve for x
    x = 16,472,646,286.41/210,053.64
  6. Step 6: Final answer
    x = 78,421.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.