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Finding the Fourth Proportional to 518,064.38, 777,140.30 and 144,087.38

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Solution

The fourth proportional to 518,064.38, 777,140.30 and 144,087.38 is: 216,143.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,064.38 : 777,140.30 = 144,087.38 : x
  2. Step 2: Convert to fraction form
    518,064.38/777,140.30 = 144,087.38/x
  3. Step 3: Cross multiply
    518,064.38x = 777,140.30 × 144,087.38
  4. Step 4: Simplify right side
    518,064.38x = 111,976,106,193.93
  5. Step 5: Solve for x
    x = 111,976,106,193.93/518,064.38
  6. Step 6: Final answer
    x = 216,143.23

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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.