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Finding the Fourth Proportional to 147,637.70, 221,456.55 and 143,749.70

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Solution

The fourth proportional to 147,637.70, 221,456.55 and 143,749.70 is: 215,624.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,637.70 : 221,456.55 = 143,749.70 : x
  2. Step 2: Convert to fraction form
    147,637.70/221,456.55 = 143,749.70/x
  3. Step 3: Cross multiply
    147,637.70x = 221,456.55 × 143,749.70
  4. Step 4: Simplify right side
    147,637.70x = 31,834,312,625.54
  5. Step 5: Solve for x
    x = 31,834,312,625.54/147,637.70
  6. Step 6: Final answer
    x = 215,624.55

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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.