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Finding the Fourth Proportional to 331,380.40, 497,070.60 and 286,279.60

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Solution

The fourth proportional to 331,380.40, 497,070.60 and 286,279.60 is: 429,419.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,380.40 : 497,070.60 = 286,279.60 : x
  2. Step 2: Convert to fraction form
    331,380.40/497,070.60 = 286,279.60/x
  3. Step 3: Cross multiply
    331,380.40x = 497,070.60 × 286,279.60
  4. Step 4: Simplify right side
    331,380.40x = 142,301,172,539.76
  5. Step 5: Solve for x
    x = 142,301,172,539.76/331,380.40
  6. Step 6: Final answer
    x = 429,419.40

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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.