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Finding the Fourth Proportional to 286,726.70, 430,090.05 and 269,230.70

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Solution

The fourth proportional to 286,726.70, 430,090.05 and 269,230.70 is: 403,846.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,726.70 : 430,090.05 = 269,230.70 : x
  2. Step 2: Convert to fraction form
    286,726.70/430,090.05 = 269,230.70/x
  3. Step 3: Cross multiply
    286,726.70x = 430,090.05 × 269,230.70
  4. Step 4: Simplify right side
    286,726.70x = 115,793,445,224.54
  5. Step 5: Solve for x
    x = 115,793,445,224.54/286,726.70
  6. Step 6: Final answer
    x = 403,846.05

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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.