Home / 210,515.20-290,424.94-155,456.44

Finding the Fourth Proportional to 210,515.20, 290,424.94 and 155,456.44

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Solution

The fourth proportional to 210,515.20, 290,424.94 and 155,456.44 is: 214,466.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,515.20 : 290,424.94 = 155,456.44 : x
  2. Step 2: Convert to fraction form
    210,515.20/290,424.94 = 155,456.44/x
  3. Step 3: Cross multiply
    210,515.20x = 290,424.94 × 155,456.44
  4. Step 4: Simplify right side
    210,515.20x = 45,148,427,259.61
  5. Step 5: Solve for x
    x = 45,148,427,259.61/210,515.20
  6. Step 6: Final answer
    x = 214,466.35

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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.