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Finding the Fourth Proportional to 210,687.32, 290,746.51 and 115,193.00

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Solution

The fourth proportional to 210,687.32, 290,746.51 and 115,193.00 is: 158,965.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,687.32 : 290,746.51 = 115,193.00 : x
  2. Step 2: Convert to fraction form
    210,687.32/290,746.51 = 115,193.00/x
  3. Step 3: Cross multiply
    210,687.32x = 290,746.51 × 115,193.00
  4. Step 4: Simplify right side
    210,687.32x = 33,491,960,984.72
  5. Step 5: Solve for x
    x = 33,491,960,984.72/210,687.32
  6. Step 6: Final answer
    x = 158,965.25

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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.