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Finding the Fourth Proportional to 303,519.40, 455,279.10 and 146,055.40

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Solution

The fourth proportional to 303,519.40, 455,279.10 and 146,055.40 is: 219,083.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,519.40 : 455,279.10 = 146,055.40 : x
  2. Step 2: Convert to fraction form
    303,519.40/455,279.10 = 146,055.40/x
  3. Step 3: Cross multiply
    303,519.40x = 455,279.10 × 146,055.40
  4. Step 4: Simplify right side
    303,519.40x = 66,495,971,062.14
  5. Step 5: Solve for x
    x = 66,495,971,062.14/303,519.40
  6. Step 6: Final answer
    x = 219,083.10

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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.