Home / 208,396.35-312,585.81-88,420.38

Finding the Fourth Proportional to 208,396.35, 312,585.81 and 88,420.38

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Solution

The fourth proportional to 208,396.35, 312,585.81 and 88,420.38 is: 132,626.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,396.35 : 312,585.81 = 88,420.38 : x
  2. Step 2: Convert to fraction form
    208,396.35/312,585.81 = 88,420.38/x
  3. Step 3: Cross multiply
    208,396.35x = 312,585.81 × 88,420.38
  4. Step 4: Simplify right side
    208,396.35x = 27,638,956,102.81
  5. Step 5: Solve for x
    x = 27,638,956,102.81/208,396.35
  6. Step 6: Final answer
    x = 132,626.87

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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.