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Finding the Fourth Proportional to 331,339.40, 497,009.10 and 286,238.60

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Solution

The fourth proportional to 331,339.40, 497,009.10 and 286,238.60 is: 429,357.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,339.40 : 497,009.10 = 286,238.60 : x
  2. Step 2: Convert to fraction form
    331,339.40/497,009.10 = 286,238.60/x
  3. Step 3: Cross multiply
    331,339.40x = 497,009.10 × 286,238.60
  4. Step 4: Simplify right side
    331,339.40x = 142,263,188,971.26
  5. Step 5: Solve for x
    x = 142,263,188,971.26/331,339.40
  6. Step 6: Final answer
    x = 429,357.90

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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.