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Finding the Fourth Proportional to 245,969.40, 368,889.30 and 77,489.40

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Solution

The fourth proportional to 245,969.40, 368,889.30 and 77,489.40 is: 116,213.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,969.40 : 368,889.30 = 77,489.40 : x
  2. Step 2: Convert to fraction form
    245,969.40/368,889.30 = 77,489.40/x
  3. Step 3: Cross multiply
    245,969.40x = 368,889.30 × 77,489.40
  4. Step 4: Simplify right side
    245,969.40x = 28,585,010,523.42
  5. Step 5: Solve for x
    x = 28,585,010,523.42/245,969.40
  6. Step 6: Final answer
    x = 116,213.69

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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.