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Finding the Fourth Proportional to 399,415.00, 598,900.84 and 133,030.20

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Solution

The fourth proportional to 399,415.00, 598,900.84 and 133,030.20 is: 199,471.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,415.00 : 598,900.84 = 133,030.20 : x
  2. Step 2: Convert to fraction form
    399,415.00/598,900.84 = 133,030.20/x
  3. Step 3: Cross multiply
    399,415.00x = 598,900.84 × 133,030.20
  4. Step 4: Simplify right side
    399,415.00x = 79,671,897,069.85
  5. Step 5: Solve for x
    x = 79,671,897,069.85/399,415.00
  6. Step 6: Final answer
    x = 199,471.47

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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.