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Finding the Fourth Proportional to 296,879.20, 445,318.80 and 286,381.60

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Solution

The fourth proportional to 296,879.20, 445,318.80 and 286,381.60 is: 429,572.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,879.20 : 445,318.80 = 286,381.60 : x
  2. Step 2: Convert to fraction form
    296,879.20/445,318.80 = 286,381.60/x
  3. Step 3: Cross multiply
    296,879.20x = 445,318.80 × 286,381.60
  4. Step 4: Simplify right side
    296,879.20x = 127,531,110,454.08
  5. Step 5: Solve for x
    x = 127,531,110,454.08/296,879.20
  6. Step 6: Final answer
    x = 429,572.40

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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.