Home / 210,359.36-315,351.47-77,208.73

Finding the Fourth Proportional to 210,359.36, 315,351.47 and 77,208.73

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Solution

The fourth proportional to 210,359.36, 315,351.47 and 77,208.73 is: 115,744.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,359.36 : 315,351.47 = 77,208.73 : x
  2. Step 2: Convert to fraction form
    210,359.36/315,351.47 = 77,208.73/x
  3. Step 3: Cross multiply
    210,359.36x = 315,351.47 × 77,208.73
  4. Step 4: Simplify right side
    210,359.36x = 24,347,885,906.98
  5. Step 5: Solve for x
    x = 24,347,885,906.98/210,359.36
  6. Step 6: Final answer
    x = 115,744.25

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1.5x scale

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.