Home / 218,574.36-301,648.05-121,784.58

Finding the Fourth Proportional to 218,574.36, 301,648.05 and 121,784.58

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Solution

The fourth proportional to 218,574.36, 301,648.05 and 121,784.58 is: 168,071.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,574.36 : 301,648.05 = 121,784.58 : x
  2. Step 2: Convert to fraction form
    218,574.36/301,648.05 = 121,784.58/x
  3. Step 3: Cross multiply
    218,574.36x = 301,648.05 × 121,784.58
  4. Step 4: Simplify right side
    218,574.36x = 36,736,081,077.07
  5. Step 5: Solve for x
    x = 36,736,081,077.07/218,574.36
  6. Step 6: Final answer
    x = 168,071.32

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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.