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Finding the Fourth Proportional to 248,402.12, 342,793.95 and 139,491.34

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Solution

The fourth proportional to 248,402.12, 342,793.95 and 139,491.34 is: 192,497.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,402.12 : 342,793.95 = 139,491.34 : x
  2. Step 2: Convert to fraction form
    248,402.12/342,793.95 = 139,491.34/x
  3. Step 3: Cross multiply
    248,402.12x = 342,793.95 × 139,491.34
  4. Step 4: Simplify right side
    248,402.12x = 47,816,787,405.74
  5. Step 5: Solve for x
    x = 47,816,787,405.74/248,402.12
  6. Step 6: Final answer
    x = 192,497.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.