Home / 218,352.05-301,309.60-122,840.30

Finding the Fourth Proportional to 218,352.05, 301,309.60 and 122,840.30

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Solution

The fourth proportional to 218,352.05, 301,309.60 and 122,840.30 is: 169,510.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,352.05 : 301,309.60 = 122,840.30 : x
  2. Step 2: Convert to fraction form
    218,352.05/301,309.60 = 122,840.30/x
  3. Step 3: Cross multiply
    218,352.05x = 301,309.60 × 122,840.30
  4. Step 4: Simplify right side
    218,352.05x = 37,012,960,293.02
  5. Step 5: Solve for x
    x = 37,012,960,293.02/218,352.05
  6. Step 6: Final answer
    x = 169,510.47

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1.5x scale

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.