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Finding the Fourth Proportional to 262,138.60, 392,430.30 and 173,492.20

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Solution

The fourth proportional to 262,138.60, 392,430.30 and 173,492.20 is: 259,723.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,138.60 : 392,430.30 = 173,492.20 : x
  2. Step 2: Convert to fraction form
    262,138.60/392,430.30 = 173,492.20/x
  3. Step 3: Cross multiply
    262,138.60x = 392,430.30 × 173,492.20
  4. Step 4: Simplify right side
    262,138.60x = 68,083,596,093.66
  5. Step 5: Solve for x
    x = 68,083,596,093.66/262,138.60
  6. Step 6: Final answer
    x = 259,723.66

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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.