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Finding the Fourth Proportional to 259,117, 357,670.95 and 151,721.56

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Solution

The fourth proportional to 259,117, 357,670.95 and 151,721.56 is: 209,428.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,117 : 357,670.95 = 151,721.56 : x
  2. Step 2: Convert to fraction form
    259,117/357,670.95 = 151,721.56/x
  3. Step 3: Cross multiply
    259,117x = 357,670.95 × 151,721.56
  4. Step 4: Simplify right side
    259,117x = 54,266,394,500.68
  5. Step 5: Solve for x
    x = 54,266,394,500.68/259,117
  6. Step 6: Final answer
    x = 209,428.15

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1.5x scale

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.