Home / 229,012.20-315,811.71-210,909.87

Finding the Fourth Proportional to 229,012.20, 315,811.71 and 210,909.87

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Solution

The fourth proportional to 229,012.20, 315,811.71 and 210,909.87 is: 290,848.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,012.20 : 315,811.71 = 210,909.87 : x
  2. Step 2: Convert to fraction form
    229,012.20/315,811.71 = 210,909.87/x
  3. Step 3: Cross multiply
    229,012.20x = 315,811.71 × 210,909.87
  4. Step 4: Simplify right side
    229,012.20x = 66,607,806,700.58
  5. Step 5: Solve for x
    x = 66,607,806,700.58/229,012.20
  6. Step 6: Final answer
    x = 290,848.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.