Home / 639,220.56-958,581.63-239,643.51

Finding the Fourth Proportional to 639,220.56, 958,581.63 and 239,643.51

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Solution

The fourth proportional to 639,220.56, 958,581.63 and 239,643.51 is: 359,371.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,220.56 : 958,581.63 = 239,643.51 : x
  2. Step 2: Convert to fraction form
    639,220.56/958,581.63 = 239,643.51/x
  3. Step 3: Cross multiply
    639,220.56x = 958,581.63 × 239,643.51
  4. Step 4: Simplify right side
    639,220.56x = 229,717,866,434.72
  5. Step 5: Solve for x
    x = 229,717,866,434.72/639,220.56
  6. Step 6: Final answer
    x = 359,371.84

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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.