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Finding the Fourth Proportional to 210,963.85, 291,132.85 and 115,468.49

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Solution

The fourth proportional to 210,963.85, 291,132.85 and 115,468.49 is: 159,348.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,963.85 : 291,132.85 = 115,468.49 : x
  2. Step 2: Convert to fraction form
    210,963.85/291,132.85 = 115,468.49/x
  3. Step 3: Cross multiply
    210,963.85x = 291,132.85 × 115,468.49
  4. Step 4: Simplify right side
    210,963.85x = 33,616,671,018.06
  5. Step 5: Solve for x
    x = 33,616,671,018.06/210,963.85
  6. Step 6: Final answer
    x = 159,348.02

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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.