Home / 427,925.06-641,988.90-139,735.28

Finding the Fourth Proportional to 427,925.06, 641,988.90 and 139,735.28

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Solution

The fourth proportional to 427,925.06, 641,988.90 and 139,735.28 is: 209,636.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,925.06 : 641,988.90 = 139,735.28 : x
  2. Step 2: Convert to fraction form
    427,925.06/641,988.90 = 139,735.28/x
  3. Step 3: Cross multiply
    427,925.06x = 641,988.90 × 139,735.28
  4. Step 4: Simplify right side
    427,925.06x = 89,708,498,698.39
  5. Step 5: Solve for x
    x = 89,708,498,698.39/427,925.06
  6. Step 6: Final answer
    x = 209,636.00

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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.