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Finding the Fourth Proportional to 303,515.20, 455,272.80 and 163,547.20

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Solution

The fourth proportional to 303,515.20, 455,272.80 and 163,547.20 is: 245,320.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,515.20 : 455,272.80 = 163,547.20 : x
  2. Step 2: Convert to fraction form
    303,515.20/455,272.80 = 163,547.20/x
  3. Step 3: Cross multiply
    303,515.20x = 455,272.80 × 163,547.20
  4. Step 4: Simplify right side
    303,515.20x = 74,458,591,676.16
  5. Step 5: Solve for x
    x = 74,458,591,676.16/303,515.20
  6. Step 6: Final answer
    x = 245,320.80

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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.