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Finding the Fourth Proportional to 252,657.86, 348,658.71 and 139,478.18

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Solution

The fourth proportional to 252,657.86, 348,658.71 and 139,478.18 is: 192,474.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,657.86 : 348,658.71 = 139,478.18 : x
  2. Step 2: Convert to fraction form
    252,657.86/348,658.71 = 139,478.18/x
  3. Step 3: Cross multiply
    252,657.86x = 348,658.71 × 139,478.18
  4. Step 4: Simplify right side
    252,657.86x = 48,630,282,311.95
  5. Step 5: Solve for x
    x = 48,630,282,311.95/252,657.86
  6. Step 6: Final answer
    x = 192,474.84

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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.