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Finding the Fourth Proportional to 539,341.38, 809,005.59 and 139,946.58

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Solution

The fourth proportional to 539,341.38, 809,005.59 and 139,946.58 is: 209,918.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,341.38 : 809,005.59 = 139,946.58 : x
  2. Step 2: Convert to fraction form
    539,341.38/809,005.59 = 139,946.58/x
  3. Step 3: Cross multiply
    539,341.38x = 809,005.59 × 139,946.58
  4. Step 4: Simplify right side
    539,341.38x = 113,217,565,521.38
  5. Step 5: Solve for x
    x = 113,217,565,521.38/539,341.38
  6. Step 6: Final answer
    x = 209,918.19

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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.