Home / 208,486.31-312,681.47-124,270.20

Finding the Fourth Proportional to 208,486.31, 312,681.47 and 124,270.20

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Solution

The fourth proportional to 208,486.31, 312,681.47 and 124,270.20 is: 186,376.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,486.31 : 312,681.47 = 124,270.20 : x
  2. Step 2: Convert to fraction form
    208,486.31/312,681.47 = 124,270.20/x
  3. Step 3: Cross multiply
    208,486.31x = 312,681.47 × 124,270.20
  4. Step 4: Simplify right side
    208,486.31x = 38,856,988,191.84
  5. Step 5: Solve for x
    x = 38,856,988,191.84/208,486.31
  6. Step 6: Final answer
    x = 186,376.69

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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.