Home / 210,628.28-315,984.77-77,509.24

Finding the Fourth Proportional to 210,628.28, 315,984.77 and 77,509.24

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Solution

The fourth proportional to 210,628.28, 315,984.77 and 77,509.24 is: 116,279.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,628.28 : 315,984.77 = 77,509.24 : x
  2. Step 2: Convert to fraction form
    210,628.28/315,984.77 = 77,509.24/x
  3. Step 3: Cross multiply
    210,628.28x = 315,984.77 × 77,509.24
  4. Step 4: Simplify right side
    210,628.28x = 24,491,739,374.27
  5. Step 5: Solve for x
    x = 24,491,739,374.27/210,628.28
  6. Step 6: Final answer
    x = 116,279.44

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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.