Home / 210,278.08-315,415.50-52,505.47

Finding the Fourth Proportional to 210,278.08, 315,415.50 and 52,505.47

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Solution

The fourth proportional to 210,278.08, 315,415.50 and 52,505.47 is: 78,757.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,278.08 : 315,415.50 = 52,505.47 : x
  2. Step 2: Convert to fraction form
    210,278.08/315,415.50 = 52,505.47/x
  3. Step 3: Cross multiply
    210,278.08x = 315,415.50 × 52,505.47
  4. Step 4: Simplify right side
    210,278.08x = 16,561,039,072.79
  5. Step 5: Solve for x
    x = 16,561,039,072.79/210,278.08
  6. Step 6: Final answer
    x = 78,757.80

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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.