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Finding the Fourth Proportional to 258,275.52, 356,462.51 and 215,186.67

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Solution

The fourth proportional to 258,275.52, 356,462.51 and 215,186.67 is: 296,992.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,275.52 : 356,462.51 = 215,186.67 : x
  2. Step 2: Convert to fraction form
    258,275.52/356,462.51 = 215,186.67/x
  3. Step 3: Cross multiply
    258,275.52x = 356,462.51 × 215,186.67
  4. Step 4: Simplify right side
    258,275.52x = 76,705,979,430.81
  5. Step 5: Solve for x
    x = 76,705,979,430.81/258,275.52
  6. Step 6: Final answer
    x = 296,992.84

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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.