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Finding the Fourth Proportional to 518,055.75, 777,127.37 and 144,078.75

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Solution

The fourth proportional to 518,055.75, 777,127.37 and 144,078.75 is: 216,130.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,055.75 : 777,127.37 = 144,078.75 : x
  2. Step 2: Convert to fraction form
    518,055.75/777,127.37 = 144,078.75/x
  3. Step 3: Cross multiply
    518,055.75x = 777,127.37 × 144,078.75
  4. Step 4: Simplify right side
    518,055.75x = 111,967,539,339.99
  5. Step 5: Solve for x
    x = 111,967,539,339.99/518,055.75
  6. Step 6: Final answer
    x = 216,130.29

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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.