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Finding the Fourth Proportional to 368,436.30, 552,654.45 and 256,461.90

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Solution

The fourth proportional to 368,436.30, 552,654.45 and 256,461.90 is: 384,692.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,436.30 : 552,654.45 = 256,461.90 : x
  2. Step 2: Convert to fraction form
    368,436.30/552,654.45 = 256,461.90/x
  3. Step 3: Cross multiply
    368,436.30x = 552,654.45 × 256,461.90
  4. Step 4: Simplify right side
    368,436.30x = 141,734,810,290.46
  5. Step 5: Solve for x
    x = 141,734,810,290.46/368,436.30
  6. Step 6: Final answer
    x = 384,692.85

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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.