Home / 208,534.51-312,753.79-124,318.45

Finding the Fourth Proportional to 208,534.51, 312,753.79 and 124,318.45

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Solution

The fourth proportional to 208,534.51, 312,753.79 and 124,318.45 is: 186,449.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,534.51 : 312,753.79 = 124,318.45 : x
  2. Step 2: Convert to fraction form
    208,534.51/312,753.79 = 124,318.45/x
  3. Step 3: Cross multiply
    208,534.51x = 312,753.79 × 124,318.45
  4. Step 4: Simplify right side
    208,534.51x = 38,881,066,404.43
  5. Step 5: Solve for x
    x = 38,881,066,404.43/208,534.51
  6. Step 6: Final answer
    x = 186,449.07

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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.