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Finding the Fourth Proportional to 210,510.54, 290,505.42 and 115,026.12

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Solution

The fourth proportional to 210,510.54, 290,505.42 and 115,026.12 is: 158,736.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,510.54 : 290,505.42 = 115,026.12 : x
  2. Step 2: Convert to fraction form
    210,510.54/290,505.42 = 115,026.12/x
  3. Step 3: Cross multiply
    210,510.54x = 290,505.42 × 115,026.12
  4. Step 4: Simplify right side
    210,510.54x = 33,415,711,301.57
  5. Step 5: Solve for x
    x = 33,415,711,301.57/210,510.54
  6. Step 6: Final answer
    x = 158,736.52

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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.