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Finding the Fourth Proportional to 210,008.78, 289,810.95 and 114,513.43

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Solution

The fourth proportional to 210,008.78, 289,810.95 and 114,513.43 is: 158,027.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,008.78 : 289,810.95 = 114,513.43 : x
  2. Step 2: Convert to fraction form
    210,008.78/289,810.95 = 114,513.43/x
  3. Step 3: Cross multiply
    210,008.78x = 289,810.95 × 114,513.43
  4. Step 4: Simplify right side
    210,008.78x = 33,187,245,936.06
  5. Step 5: Solve for x
    x = 33,187,245,936.06/210,008.78
  6. Step 6: Final answer
    x = 158,027.90

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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.