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Finding the Fourth Proportional to 205,080.40, 307,289.40 and 116,069.20

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Solution

The fourth proportional to 205,080.40, 307,289.40 and 116,069.20 is: 173,916.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,080.40 : 307,289.40 = 116,069.20 : x
  2. Step 2: Convert to fraction form
    205,080.40/307,289.40 = 116,069.20/x
  3. Step 3: Cross multiply
    205,080.40x = 307,289.40 × 116,069.20
  4. Step 4: Simplify right side
    205,080.40x = 35,666,834,826.48
  5. Step 5: Solve for x
    x = 35,666,834,826.48/205,080.40
  6. Step 6: Final answer
    x = 173,916.35

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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.