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Finding the Fourth Proportional to 518,401.50, 777,646.80 and 144,424.50

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Solution

The fourth proportional to 518,401.50, 777,646.80 and 144,424.50 is: 216,649.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,401.50 : 777,646.80 = 144,424.50 : x
  2. Step 2: Convert to fraction form
    518,401.50/777,646.80 = 144,424.50/x
  3. Step 3: Cross multiply
    518,401.50x = 777,646.80 × 144,424.50
  4. Step 4: Simplify right side
    518,401.50x = 112,311,250,266.60
  5. Step 5: Solve for x
    x = 112,311,250,266.60/518,401.50
  6. Step 6: Final answer
    x = 216,649.16

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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.