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Finding the Fourth Proportional to 639,574.70, 959,186.55 and 240,185.30

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Solution

The fourth proportional to 639,574.70, 959,186.55 and 240,185.30 is: 360,212.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,574.70 : 959,186.55 = 240,185.30 : x
  2. Step 2: Convert to fraction form
    639,574.70/959,186.55 = 240,185.30/x
  3. Step 3: Cross multiply
    639,574.70x = 959,186.55 × 240,185.30
  4. Step 4: Simplify right side
    639,574.70x = 230,382,509,267.72
  5. Step 5: Solve for x
    x = 230,382,509,267.72/639,574.70
  6. Step 6: Final answer
    x = 360,212.04

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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.