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Finding the Fourth Proportional to 310,726.20, 465,858.90 and 133,087.80

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Solution

The fourth proportional to 310,726.20, 465,858.90 and 133,087.80 is: 199,533.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,726.20 : 465,858.90 = 133,087.80 : x
  2. Step 2: Convert to fraction form
    310,726.20/465,858.90 = 133,087.80/x
  3. Step 3: Cross multiply
    310,726.20x = 465,858.90 × 133,087.80
  4. Step 4: Simplify right side
    310,726.20x = 62,000,136,111.42
  5. Step 5: Solve for x
    x = 62,000,136,111.42/310,726.20
  6. Step 6: Final answer
    x = 199,533.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.