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Finding the Fourth Proportional to 210,893.98, 291,036.90 and 115,409.56

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Solution

The fourth proportional to 210,893.98, 291,036.90 and 115,409.56 is: 159,266.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,893.98 : 291,036.90 = 115,409.56 : x
  2. Step 2: Convert to fraction form
    210,893.98/291,036.90 = 115,409.56/x
  3. Step 3: Cross multiply
    210,893.98x = 291,036.90 × 115,409.56
  4. Step 4: Simplify right side
    210,893.98x = 33,588,440,572.76
  5. Step 5: Solve for x
    x = 33,588,440,572.76/210,893.98
  6. Step 6: Final answer
    x = 159,266.95

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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.