Home / 520,143.02-780,229.11-254,116.34

Finding the Fourth Proportional to 520,143.02, 780,229.11 and 254,116.34

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Solution

The fourth proportional to 520,143.02, 780,229.11 and 254,116.34 is: 381,181.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,143.02 : 780,229.11 = 254,116.34 : x
  2. Step 2: Convert to fraction form
    520,143.02/780,229.11 = 254,116.34/x
  3. Step 3: Cross multiply
    520,143.02x = 780,229.11 × 254,116.34
  4. Step 4: Simplify right side
    520,143.02x = 198,268,961,893.51
  5. Step 5: Solve for x
    x = 198,268,961,893.51/520,143.02
  6. Step 6: Final answer
    x = 381,181.63

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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.