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Finding the Fourth Proportional to 331,000.81, 455,911.01 and 254,373.19

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Solution

The fourth proportional to 331,000.81, 455,911.01 and 254,373.19 is: 350,366.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,000.81 : 455,911.01 = 254,373.19 : x
  2. Step 2: Convert to fraction form
    331,000.81/455,911.01 = 254,373.19/x
  3. Step 3: Cross multiply
    331,000.81x = 455,911.01 × 254,373.19
  4. Step 4: Simplify right side
    331,000.81x = 115,971,537,969.07
  5. Step 5: Solve for x
    x = 115,971,537,969.07/331,000.81
  6. Step 6: Final answer
    x = 350,366.33

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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.