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Finding the Fourth Proportional to 210,846.52, 290,981.10 and 121,451.32

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Solution

The fourth proportional to 210,846.52, 290,981.10 and 121,451.32 is: 167,610.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,846.52 : 290,981.10 = 121,451.32 : x
  2. Step 2: Convert to fraction form
    210,846.52/290,981.10 = 121,451.32/x
  3. Step 3: Cross multiply
    210,846.52x = 290,981.10 × 121,451.32
  4. Step 4: Simplify right side
    210,846.52x = 35,340,038,690.05
  5. Step 5: Solve for x
    x = 35,340,038,690.05/210,846.52
  6. Step 6: Final answer
    x = 167,610.25

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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.