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Finding the Fourth Proportional to 210,395.99, 290,271.70 and 124,336.73

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Solution

The fourth proportional to 210,395.99, 290,271.70 and 124,336.73 is: 171,540.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,395.99 : 290,271.70 = 124,336.73 : x
  2. Step 2: Convert to fraction form
    210,395.99/290,271.70 = 124,336.73/x
  3. Step 3: Cross multiply
    210,395.99x = 290,271.70 × 124,336.73
  4. Step 4: Simplify right side
    210,395.99x = 36,091,434,870.64
  5. Step 5: Solve for x
    x = 36,091,434,870.64/210,395.99
  6. Step 6: Final answer
    x = 171,540.51

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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.