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Finding the Fourth Proportional to 323,700.08, 446,897.70 and 287,790.75

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Solution

The fourth proportional to 323,700.08, 446,897.70 and 287,790.75 is: 397,321.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,700.08 : 446,897.70 = 287,790.75 : x
  2. Step 2: Convert to fraction form
    323,700.08/446,897.70 = 287,790.75/x
  3. Step 3: Cross multiply
    323,700.08x = 446,897.70 × 287,790.75
  4. Step 4: Simplify right side
    323,700.08x = 128,613,024,256.28
  5. Step 5: Solve for x
    x = 128,613,024,256.28/323,700.08
  6. Step 6: Final answer
    x = 397,321.58

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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.