Home / 218,819.13-301,970.40-118,217.13

Finding the Fourth Proportional to 218,819.13, 301,970.40 and 118,217.13

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Solution

The fourth proportional to 218,819.13, 301,970.40 and 118,217.13 is: 163,139.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,819.13 : 301,970.40 = 118,217.13 : x
  2. Step 2: Convert to fraction form
    218,819.13/301,970.40 = 118,217.13/x
  3. Step 3: Cross multiply
    218,819.13x = 301,970.40 × 118,217.13
  4. Step 4: Simplify right side
    218,819.13x = 35,698,074,032.95
  5. Step 5: Solve for x
    x = 35,698,074,032.95/218,819.13
  6. Step 6: Final answer
    x = 163,139.64

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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.