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Finding the Fourth Proportional to 258,012.11, 356,024.43 and 143,275.11

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Solution

The fourth proportional to 258,012.11, 356,024.43 and 143,275.11 is: 197,701.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,012.11 : 356,024.43 = 143,275.11 : x
  2. Step 2: Convert to fraction form
    258,012.11/356,024.43 = 143,275.11/x
  3. Step 3: Cross multiply
    258,012.11x = 356,024.43 × 143,275.11
  4. Step 4: Simplify right side
    258,012.11x = 51,009,439,370.94
  5. Step 5: Solve for x
    x = 51,009,439,370.94/258,012.11
  6. Step 6: Final answer
    x = 197,701.73

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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.