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Finding the Fourth Proportional to 519,515.40, 779,297.40 and 164,557.20

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Solution

The fourth proportional to 519,515.40, 779,297.40 and 164,557.20 is: 246,843.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,515.40 : 779,297.40 = 164,557.20 : x
  2. Step 2: Convert to fraction form
    519,515.40/779,297.40 = 164,557.20/x
  3. Step 3: Cross multiply
    519,515.40x = 779,297.40 × 164,557.20
  4. Step 4: Simplify right side
    519,515.40x = 128,238,998,111.28
  5. Step 5: Solve for x
    x = 128,238,998,111.28/519,515.40
  6. Step 6: Final answer
    x = 246,843.50

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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.