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Finding the Fourth Proportional to 210,340.72, 290,266.92 and 114,845.40

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Solution

The fourth proportional to 210,340.72, 290,266.92 and 114,845.40 is: 158,484.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,340.72 : 290,266.92 = 114,845.40 : x
  2. Step 2: Convert to fraction form
    210,340.72/290,266.92 = 114,845.40/x
  3. Step 3: Cross multiply
    210,340.72x = 290,266.92 × 114,845.40
  4. Step 4: Simplify right side
    210,340.72x = 33,335,820,534.17
  5. Step 5: Solve for x
    x = 33,335,820,534.17/210,340.72
  6. Step 6: Final answer
    x = 158,484.86

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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.