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Finding the Fourth Proportional to 268,274.40, 401,950.80 and 127,730.40

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Solution

The fourth proportional to 268,274.40, 401,950.80 and 127,730.40 is: 191,376.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,274.40 : 401,950.80 = 127,730.40 : x
  2. Step 2: Convert to fraction form
    268,274.40/401,950.80 = 127,730.40/x
  3. Step 3: Cross multiply
    268,274.40x = 401,950.80 × 127,730.40
  4. Step 4: Simplify right side
    268,274.40x = 51,341,336,464.32
  5. Step 5: Solve for x
    x = 51,341,336,464.32/268,274.40
  6. Step 6: Final answer
    x = 191,376.20

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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.