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Finding the Fourth Proportional to 519,145.80, 778,718.70 and 267,203.40

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Solution

The fourth proportional to 519,145.80, 778,718.70 and 267,203.40 is: 400,805.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,145.80 : 778,718.70 = 267,203.40 : x
  2. Step 2: Convert to fraction form
    519,145.80/778,718.70 = 267,203.40/x
  3. Step 3: Cross multiply
    519,145.80x = 778,718.70 × 267,203.40
  4. Step 4: Simplify right side
    519,145.80x = 208,076,284,283.58
  5. Step 5: Solve for x
    x = 208,076,284,283.58/519,145.80
  6. Step 6: Final answer
    x = 400,805.10

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Similar ratio
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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.