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Finding the Fourth Proportional to 559,888.09, 839,832.78 and 139,163.96

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Solution

The fourth proportional to 559,888.09, 839,832.78 and 139,163.96 is: 208,746.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,888.09 : 839,832.78 = 139,163.96 : x
  2. Step 2: Convert to fraction form
    559,888.09/839,832.78 = 139,163.96/x
  3. Step 3: Cross multiply
    559,888.09x = 839,832.78 × 139,163.96
  4. Step 4: Simplify right side
    559,888.09x = 116,874,455,402.61
  5. Step 5: Solve for x
    x = 116,874,455,402.61/559,888.09
  6. Step 6: Final answer
    x = 208,746.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.