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Finding the Fourth Proportional to 262,114.40, 392,588.40 and 215,458.40

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Solution

The fourth proportional to 262,114.40, 392,588.40 and 215,458.40 is: 322,708.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,114.40 : 392,588.40 = 215,458.40 : x
  2. Step 2: Convert to fraction form
    262,114.40/392,588.40 = 215,458.40/x
  3. Step 3: Cross multiply
    262,114.40x = 392,588.40 × 215,458.40
  4. Step 4: Simplify right side
    262,114.40x = 84,586,468,522.56
  5. Step 5: Solve for x
    x = 84,586,468,522.56/262,114.40
  6. Step 6: Final answer
    x = 322,708.21

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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.