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Finding the Fourth Proportional to 399,301.60, 598,952.40 and 133,070.80

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Solution

The fourth proportional to 399,301.60, 598,952.40 and 133,070.80 is: 199,606.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,301.60 : 598,952.40 = 133,070.80 : x
  2. Step 2: Convert to fraction form
    399,301.60/598,952.40 = 133,070.80/x
  3. Step 3: Cross multiply
    399,301.60x = 598,952.40 × 133,070.80
  4. Step 4: Simplify right side
    399,301.60x = 79,703,075,029.92
  5. Step 5: Solve for x
    x = 79,703,075,029.92/399,301.60
  6. Step 6: Final answer
    x = 199,606.20

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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.