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Finding the Fourth Proportional to 210,898.77, 291,040.29 and 115,405.47

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Solution

The fourth proportional to 210,898.77, 291,040.29 and 115,405.47 is: 159,259.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,898.77 : 291,040.29 = 115,405.47 : x
  2. Step 2: Convert to fraction form
    210,898.77/291,040.29 = 115,405.47/x
  3. Step 3: Cross multiply
    210,898.77x = 291,040.29 × 115,405.47
  4. Step 4: Simplify right side
    210,898.77x = 33,587,641,456.39
  5. Step 5: Solve for x
    x = 33,587,641,456.39/210,898.77
  6. Step 6: Final answer
    x = 159,259.54

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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.