Home / 320,930.41-442,897.80-177,690.45

Finding the Fourth Proportional to 320,930.41, 442,897.80 and 177,690.45

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Solution

The fourth proportional to 320,930.41, 442,897.80 and 177,690.45 is: 245,220.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,930.41 : 442,897.80 = 177,690.45 : x
  2. Step 2: Convert to fraction form
    320,930.41/442,897.80 = 177,690.45/x
  3. Step 3: Cross multiply
    320,930.41x = 442,897.80 × 177,690.45
  4. Step 4: Simplify right side
    320,930.41x = 78,698,709,386.01
  5. Step 5: Solve for x
    x = 78,698,709,386.01/320,930.41
  6. Step 6: Final answer
    x = 245,220.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.