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Finding the Fourth Proportional to 258,480.28, 356,734.92 and 145,303.12

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Solution

The fourth proportional to 258,480.28, 356,734.92 and 145,303.12 is: 200,536.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,480.28 : 356,734.92 = 145,303.12 : x
  2. Step 2: Convert to fraction form
    258,480.28/356,734.92 = 145,303.12/x
  3. Step 3: Cross multiply
    258,480.28x = 356,734.92 × 145,303.12
  4. Step 4: Simplify right side
    258,480.28x = 51,834,696,888.95
  5. Step 5: Solve for x
    x = 51,834,696,888.95/258,480.28
  6. Step 6: Final answer
    x = 200,536.37

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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.