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Finding the Fourth Proportional to 252,657.36, 348,658.02 and 139,477.68

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Solution

The fourth proportional to 252,657.36, 348,658.02 and 139,477.68 is: 192,474.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,657.36 : 348,658.02 = 139,477.68 : x
  2. Step 2: Convert to fraction form
    252,657.36/348,658.02 = 139,477.68/x
  3. Step 3: Cross multiply
    252,657.36x = 348,658.02 × 139,477.68
  4. Step 4: Simplify right side
    252,657.36x = 48,630,011,742.99
  5. Step 5: Solve for x
    x = 48,630,011,742.99/252,657.36
  6. Step 6: Final answer
    x = 192,474.15

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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.