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Finding the Fourth Proportional to 356,907.28, 535,242.96 and 120,191.20

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Solution

The fourth proportional to 356,907.28, 535,242.96 and 120,191.20 is: 180,247.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,907.28 : 535,242.96 = 120,191.20 : x
  2. Step 2: Convert to fraction form
    356,907.28/535,242.96 = 120,191.20/x
  3. Step 3: Cross multiply
    356,907.28x = 535,242.96 × 120,191.20
  4. Step 4: Simplify right side
    356,907.28x = 64,331,493,653.95
  5. Step 5: Solve for x
    x = 64,331,493,653.95/356,907.28
  6. Step 6: Final answer
    x = 180,247.08

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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.