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Finding the Fourth Proportional to 518,474.80, 777,616.20 and 144,420.40

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Solution

The fourth proportional to 518,474.80, 777,616.20 and 144,420.40 is: 216,603.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,474.80 : 777,616.20 = 144,420.40 : x
  2. Step 2: Convert to fraction form
    518,474.80/777,616.20 = 144,420.40/x
  3. Step 3: Cross multiply
    518,474.80x = 777,616.20 × 144,420.40
  4. Step 4: Simplify right side
    518,474.80x = 112,303,642,650.48
  5. Step 5: Solve for x
    x = 112,303,642,650.48/518,474.80
  6. Step 6: Final answer
    x = 216,603.86

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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.