Home / 421,949.90-632,856.63-155,835.74

Finding the Fourth Proportional to 421,949.90, 632,856.63 and 155,835.74

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Solution

The fourth proportional to 421,949.90, 632,856.63 and 155,835.74 is: 233,728.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,949.90 : 632,856.63 = 155,835.74 : x
  2. Step 2: Convert to fraction form
    421,949.90/632,856.63 = 155,835.74/x
  3. Step 3: Cross multiply
    421,949.90x = 632,856.63 × 155,835.74
  4. Step 4: Simplify right side
    421,949.90x = 98,621,681,249.96
  5. Step 5: Solve for x
    x = 98,621,681,249.96/421,949.90
  6. Step 6: Final answer
    x = 233,728.41

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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.