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Finding the Fourth Proportional to 245,737.18, 368,694.47 and 85,836.80

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Solution

The fourth proportional to 245,737.18, 368,694.47 and 85,836.80 is: 128,786.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,737.18 : 368,694.47 = 85,836.80 : x
  2. Step 2: Convert to fraction form
    245,737.18/368,694.47 = 85,836.80/x
  3. Step 3: Cross multiply
    245,737.18x = 368,694.47 × 85,836.80
  4. Step 4: Simplify right side
    245,737.18x = 31,647,553,482.50
  5. Step 5: Solve for x
    x = 31,647,553,482.50/245,737.18
  6. Step 6: Final answer
    x = 128,786.18

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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.