Home / 268,122.60-401,309.10-215,051.40

Finding the Fourth Proportional to 268,122.60, 401,309.10 and 215,051.40

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Solution

The fourth proportional to 268,122.60, 401,309.10 and 215,051.40 is: 321,875.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,122.60 : 401,309.10 = 215,051.40 : x
  2. Step 2: Convert to fraction form
    268,122.60/401,309.10 = 215,051.40/x
  3. Step 3: Cross multiply
    268,122.60x = 401,309.10 × 215,051.40
  4. Step 4: Simplify right side
    268,122.60x = 86,302,083,787.74
  5. Step 5: Solve for x
    x = 86,302,083,787.74/268,122.60
  6. Step 6: Final answer
    x = 321,875.45

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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.