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Finding the Fourth Proportional to 518,107.60, 777,161.40 and 144,130.60

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Solution

The fourth proportional to 518,107.60, 777,161.40 and 144,130.60 is: 216,195.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,107.60 : 777,161.40 = 144,130.60 : x
  2. Step 2: Convert to fraction form
    518,107.60/777,161.40 = 144,130.60/x
  3. Step 3: Cross multiply
    518,107.60x = 777,161.40 × 144,130.60
  4. Step 4: Simplify right side
    518,107.60x = 112,012,738,878.84
  5. Step 5: Solve for x
    x = 112,012,738,878.84/518,107.60
  6. Step 6: Final answer
    x = 216,195.90

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1.5x scale

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.