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Finding the Fourth Proportional to 247,830.76, 342,005.26 and 140,400.54

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Solution

The fourth proportional to 247,830.76, 342,005.26 and 140,400.54 is: 193,752.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,830.76 : 342,005.26 = 140,400.54 : x
  2. Step 2: Convert to fraction form
    247,830.76/342,005.26 = 140,400.54/x
  3. Step 3: Cross multiply
    247,830.76x = 342,005.26 × 140,400.54
  4. Step 4: Simplify right side
    247,830.76x = 48,017,721,125.81
  5. Step 5: Solve for x
    x = 48,017,721,125.81/247,830.76
  6. Step 6: Final answer
    x = 193,752.07

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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.