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Finding the Fourth Proportional to 239,243.16, 358,920.29 and 81,472.98

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Solution

The fourth proportional to 239,243.16, 358,920.29 and 81,472.98 is: 122,228.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,243.16 : 358,920.29 = 81,472.98 : x
  2. Step 2: Convert to fraction form
    239,243.16/358,920.29 = 81,472.98/x
  3. Step 3: Cross multiply
    239,243.16x = 358,920.29 × 81,472.98
  4. Step 4: Simplify right side
    239,243.16x = 29,242,305,608.76
  5. Step 5: Solve for x
    x = 29,242,305,608.76/239,243.16
  6. Step 6: Final answer
    x = 122,228.39

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1.5x scale

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.