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Finding the Fourth Proportional to 339,445.71, 508,973.43 and 139,903.83

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Solution

The fourth proportional to 339,445.71, 508,973.43 and 139,903.83 is: 209,775.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,445.71 : 508,973.43 = 139,903.83 : x
  2. Step 2: Convert to fraction form
    339,445.71/508,973.43 = 139,903.83/x
  3. Step 3: Cross multiply
    339,445.71x = 508,973.43 × 139,903.83
  4. Step 4: Simplify right side
    339,445.71x = 71,207,332,225.24
  5. Step 5: Solve for x
    x = 71,207,332,225.24/339,445.71
  6. Step 6: Final answer
    x = 209,775.32

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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.