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Finding the Fourth Proportional to 339,877.17, 509,483.25 and 140,365.67

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Solution

The fourth proportional to 339,877.17, 509,483.25 and 140,365.67 is: 210,411.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,877.17 : 509,483.25 = 140,365.67 : x
  2. Step 2: Convert to fraction form
    339,877.17/509,483.25 = 140,365.67/x
  3. Step 3: Cross multiply
    339,877.17x = 509,483.25 × 140,365.67
  4. Step 4: Simplify right side
    339,877.17x = 71,513,955,192.61
  5. Step 5: Solve for x
    x = 71,513,955,192.61/339,877.17
  6. Step 6: Final answer
    x = 210,411.18

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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.