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Finding the Fourth Proportional to 273,959.89, 378,066.05 and 153,103.20

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Solution

The fourth proportional to 273,959.89, 378,066.05 and 153,103.20 is: 211,283.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,959.89 : 378,066.05 = 153,103.20 : x
  2. Step 2: Convert to fraction form
    273,959.89/378,066.05 = 153,103.20/x
  3. Step 3: Cross multiply
    273,959.89x = 378,066.05 × 153,103.20
  4. Step 4: Simplify right side
    273,959.89x = 57,883,120,457.23
  5. Step 5: Solve for x
    x = 57,883,120,457.23/273,959.89
  6. Step 6: Final answer
    x = 211,283.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.