Home / 210,510.20-290,418.05-155,451.44

Finding the Fourth Proportional to 210,510.20, 290,418.05 and 155,451.44

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Solution

The fourth proportional to 210,510.20, 290,418.05 and 155,451.44 is: 214,459.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,510.20 : 290,418.05 = 155,451.44 : x
  2. Step 2: Convert to fraction form
    210,510.20/290,418.05 = 155,451.44/x
  3. Step 3: Cross multiply
    210,510.20x = 290,418.05 × 155,451.44
  4. Step 4: Simplify right side
    210,510.20x = 45,145,901,845.14
  5. Step 5: Solve for x
    x = 45,145,901,845.14/210,510.20
  6. Step 6: Final answer
    x = 214,459.46

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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.