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Finding the Fourth Proportional to 268,485.40, 403,602.90 and 190,142.20

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Solution

The fourth proportional to 268,485.40, 403,602.90 and 190,142.20 is: 285,832.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,485.40 : 403,602.90 = 190,142.20 : x
  2. Step 2: Convert to fraction form
    268,485.40/403,602.90 = 190,142.20/x
  3. Step 3: Cross multiply
    268,485.40x = 403,602.90 × 190,142.20
  4. Step 4: Simplify right side
    268,485.40x = 76,741,943,332.38
  5. Step 5: Solve for x
    x = 76,741,943,332.38/268,485.40
  6. Step 6: Final answer
    x = 285,832.84

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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.