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Finding the Fourth Proportional to 251,798.06, 347,482.64 and 138,620.81

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Solution

The fourth proportional to 251,798.06, 347,482.64 and 138,620.81 is: 191,297.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,798.06 : 347,482.64 = 138,620.81 : x
  2. Step 2: Convert to fraction form
    251,798.06/347,482.64 = 138,620.81/x
  3. Step 3: Cross multiply
    251,798.06x = 347,482.64 × 138,620.81
  4. Step 4: Simplify right side
    251,798.06x = 48,168,325,017.74
  5. Step 5: Solve for x
    x = 48,168,325,017.74/251,798.06
  6. Step 6: Final answer
    x = 191,297.44

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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.