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Finding the Fourth Proportional to 210,954.77, 291,106.36 and 115,443.01

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Solution

The fourth proportional to 210,954.77, 291,106.36 and 115,443.01 is: 159,305.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,954.77 : 291,106.36 = 115,443.01 : x
  2. Step 2: Convert to fraction form
    210,954.77/291,106.36 = 115,443.01/x
  3. Step 3: Cross multiply
    210,954.77x = 291,106.36 × 115,443.01
  4. Step 4: Simplify right side
    210,954.77x = 33,606,193,845.08
  5. Step 5: Solve for x
    x = 33,606,193,845.08/210,954.77
  6. Step 6: Final answer
    x = 159,305.21

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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.