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Finding the Fourth Proportional to 210,504.71, 290,500.68 and 115,017.32

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Solution

The fourth proportional to 210,504.71, 290,500.68 and 115,017.32 is: 158,726.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,504.71 : 290,500.68 = 115,017.32 : x
  2. Step 2: Convert to fraction form
    210,504.71/290,500.68 = 115,017.32/x
  3. Step 3: Cross multiply
    210,504.71x = 290,500.68 × 115,017.32
  4. Step 4: Simplify right side
    210,504.71x = 33,412,609,671.78
  5. Step 5: Solve for x
    x = 33,412,609,671.78/210,504.71
  6. Step 6: Final answer
    x = 158,726.19

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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.