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Finding the Fourth Proportional to 559,937.05, 839,908.76 and 139,212.92

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Solution

The fourth proportional to 559,937.05, 839,908.76 and 139,212.92 is: 208,820.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,937.05 : 839,908.76 = 139,212.92 : x
  2. Step 2: Convert to fraction form
    559,937.05/839,908.76 = 139,212.92/x
  3. Step 3: Cross multiply
    559,937.05x = 839,908.76 × 139,212.92
  4. Step 4: Simplify right side
    559,937.05x = 116,926,151,013.18
  5. Step 5: Solve for x
    x = 116,926,151,013.18/559,937.05
  6. Step 6: Final answer
    x = 208,820.17

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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.