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Finding the Fourth Proportional to 299,920.40, 450,053.40 and 112,950.80

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Solution

The fourth proportional to 299,920.40, 450,053.40 and 112,950.80 is: 169,491.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,920.40 : 450,053.40 = 112,950.80 : x
  2. Step 2: Convert to fraction form
    299,920.40/450,053.40 = 112,950.80/x
  3. Step 3: Cross multiply
    299,920.40x = 450,053.40 × 112,950.80
  4. Step 4: Simplify right side
    299,920.40x = 50,833,891,572.72
  5. Step 5: Solve for x
    x = 50,833,891,572.72/299,920.40
  6. Step 6: Final answer
    x = 169,491.28

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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.