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Finding the Fourth Proportional to 286,719.70, 430,079.55 and 269,223.70

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Solution

The fourth proportional to 286,719.70, 430,079.55 and 269,223.70 is: 403,835.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,719.70 : 430,079.55 = 269,223.70 : x
  2. Step 2: Convert to fraction form
    286,719.70/430,079.55 = 269,223.70/x
  3. Step 3: Cross multiply
    286,719.70x = 430,079.55 × 269,223.70
  4. Step 4: Simplify right side
    286,719.70x = 115,787,607,745.34
  5. Step 5: Solve for x
    x = 115,787,607,745.34/286,719.70
  6. Step 6: Final answer
    x = 403,835.55

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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.