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Finding the Fourth Proportional to 210,955.97, 291,108.05 and 115,444.20

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Solution

The fourth proportional to 210,955.97, 291,108.05 and 115,444.20 is: 159,306.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,955.97 : 291,108.05 = 115,444.20 : x
  2. Step 2: Convert to fraction form
    210,955.97/291,108.05 = 115,444.20/x
  3. Step 3: Cross multiply
    210,955.97x = 291,108.05 × 115,444.20
  4. Step 4: Simplify right side
    210,955.97x = 33,606,735,368.59
  5. Step 5: Solve for x
    x = 33,606,735,368.59/210,955.97
  6. Step 6: Final answer
    x = 159,306.87

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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.