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Finding the Fourth Proportional to 245,845.64, 368,797.01 and 85,872.06

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Solution

The fourth proportional to 245,845.64, 368,797.01 and 85,872.06 is: 128,818.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,845.64 : 368,797.01 = 85,872.06 : x
  2. Step 2: Convert to fraction form
    245,845.64/368,797.01 = 85,872.06/x
  3. Step 3: Cross multiply
    245,845.64x = 368,797.01 × 85,872.06
  4. Step 4: Simplify right side
    245,845.64x = 31,669,358,541.18
  5. Step 5: Solve for x
    x = 31,669,358,541.18/245,845.64
  6. Step 6: Final answer
    x = 128,818.06

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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.