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Finding the Fourth Proportional to 639,210.94, 958,567.23 and 239,633.69

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Solution

The fourth proportional to 639,210.94, 958,567.23 and 239,633.69 is: 359,357.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,210.94 : 958,567.23 = 239,633.69 : x
  2. Step 2: Convert to fraction form
    639,210.94/958,567.23 = 239,633.69/x
  3. Step 3: Cross multiply
    639,210.94x = 958,567.23 × 239,633.69
  4. Step 4: Simplify right side
    639,210.94x = 229,705,000,640.65
  5. Step 5: Solve for x
    x = 229,705,000,640.65/639,210.94
  6. Step 6: Final answer
    x = 359,357.12

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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.