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Finding the Fourth Proportional to 639,275.31, 958,663.66 and 239,698.35

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Solution

The fourth proportional to 639,275.31, 958,663.66 and 239,698.35 is: 359,454.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,275.31 : 958,663.66 = 239,698.35 : x
  2. Step 2: Convert to fraction form
    639,275.31/958,663.66 = 239,698.35/x
  3. Step 3: Cross multiply
    639,275.31x = 958,663.66 × 239,698.35
  4. Step 4: Simplify right side
    639,275.31x = 229,790,097,506.96
  5. Step 5: Solve for x
    x = 229,790,097,506.96/639,275.31
  6. Step 6: Final answer
    x = 359,454.05

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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.