Home / 210,042.76-315,064.18-52,271.20

Finding the Fourth Proportional to 210,042.76, 315,064.18 and 52,271.20

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Solution

The fourth proportional to 210,042.76, 315,064.18 and 52,271.20 is: 78,406.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,042.76 : 315,064.18 = 52,271.20 : x
  2. Step 2: Convert to fraction form
    210,042.76/315,064.18 = 52,271.20/x
  3. Step 3: Cross multiply
    210,042.76x = 315,064.18 × 52,271.20
  4. Step 4: Simplify right side
    210,042.76x = 16,468,782,765.62
  5. Step 5: Solve for x
    x = 16,468,782,765.62/210,042.76
  6. Step 6: Final answer
    x = 78,406.81

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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.