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Finding the Fourth Proportional to 262,197.40, 392,712.90 and 215,541.40

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Solution

The fourth proportional to 262,197.40, 392,712.90 and 215,541.40 is: 322,832.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,197.40 : 392,712.90 = 215,541.40 : x
  2. Step 2: Convert to fraction form
    262,197.40/392,712.90 = 215,541.40/x
  3. Step 3: Cross multiply
    262,197.40x = 392,712.90 × 215,541.40
  4. Step 4: Simplify right side
    262,197.40x = 84,645,888,264.06
  5. Step 5: Solve for x
    x = 84,645,888,264.06/262,197.40
  6. Step 6: Final answer
    x = 322,832.68

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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.