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Finding the Fourth Proportional to 559,937.55, 839,909.51 and 139,213.42

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Solution

The fourth proportional to 559,937.55, 839,909.51 and 139,213.42 is: 208,820.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,937.55 : 839,909.51 = 139,213.42 : x
  2. Step 2: Convert to fraction form
    559,937.55/839,909.51 = 139,213.42/x
  3. Step 3: Cross multiply
    559,937.55x = 839,909.51 × 139,213.42
  4. Step 4: Simplify right side
    559,937.55x = 116,926,675,377.62
  5. Step 5: Solve for x
    x = 116,926,675,377.62/559,937.55
  6. Step 6: Final answer
    x = 208,820.92

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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.