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Finding the Fourth Proportional to 210,887.58, 291,024.86 and 115,394.28

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Solution

The fourth proportional to 210,887.58, 291,024.86 and 115,394.28 is: 159,244.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,887.58 : 291,024.86 = 115,394.28 : x
  2. Step 2: Convert to fraction form
    210,887.58/291,024.86 = 115,394.28/x
  3. Step 3: Cross multiply
    210,887.58x = 291,024.86 × 115,394.28
  4. Step 4: Simplify right side
    210,887.58x = 33,582,602,513.49
  5. Step 5: Solve for x
    x = 33,582,602,513.49/210,887.58
  6. Step 6: Final answer
    x = 159,244.10

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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.