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Finding the Fourth Proportional to 368,609.63, 508,542.35 and 215,599.01

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Solution

The fourth proportional to 368,609.63, 508,542.35 and 215,599.01 is: 297,445.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,609.63 : 508,542.35 = 215,599.01 : x
  2. Step 2: Convert to fraction form
    368,609.63/508,542.35 = 215,599.01/x
  3. Step 3: Cross multiply
    368,609.63x = 508,542.35 × 215,599.01
  4. Step 4: Simplify right side
    368,609.63x = 109,641,223,582.37
  5. Step 5: Solve for x
    x = 109,641,223,582.37/368,609.63
  6. Step 6: Final answer
    x = 297,445.36

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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.