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Finding the Fourth Proportional to 210,673.99, 290,730.14 and 115,180.71

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Solution

The fourth proportional to 210,673.99, 290,730.14 and 115,180.71 is: 158,949.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,673.99 : 290,730.14 = 115,180.71 : x
  2. Step 2: Convert to fraction form
    210,673.99/290,730.14 = 115,180.71/x
  3. Step 3: Cross multiply
    210,673.99x = 290,730.14 × 115,180.71
  4. Step 4: Simplify right side
    210,673.99x = 33,486,503,943.60
  5. Step 5: Solve for x
    x = 33,486,503,943.60/210,673.99
  6. Step 6: Final answer
    x = 158,949.40

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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.