Home / 639,155.07-958,695-239,762.40

Finding the Fourth Proportional to 639,155.07, 958,695 and 239,762.40

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Solution

The fourth proportional to 639,155.07, 958,695 and 239,762.40 is: 359,629.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,155.07 : 958,695 = 239,762.40 : x
  2. Step 2: Convert to fraction form
    639,155.07/958,695 = 239,762.40/x
  3. Step 3: Cross multiply
    639,155.07x = 958,695 × 239,762.40
  4. Step 4: Simplify right side
    639,155.07x = 229,859,014,068
  5. Step 5: Solve for x
    x = 229,859,014,068/639,155.07
  6. Step 6: Final answer
    x = 359,629.49

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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.