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Finding the Fourth Proportional to 210,650.51, 290,664.10 and 120,008.27

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Solution

The fourth proportional to 210,650.51, 290,664.10 and 120,008.27 is: 165,592.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,650.51 : 290,664.10 = 120,008.27 : x
  2. Step 2: Convert to fraction form
    210,650.51/290,664.10 = 120,008.27/x
  3. Step 3: Cross multiply
    210,650.51x = 290,664.10 × 120,008.27
  4. Step 4: Simplify right side
    210,650.51x = 34,882,095,792.11
  5. Step 5: Solve for x
    x = 34,882,095,792.11/210,650.51
  6. Step 6: Final answer
    x = 165,592.27

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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.