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Finding the Fourth Proportional to 432,139, 649,048.80 and 352,235.56

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Solution

The fourth proportional to 432,139, 649,048.80 and 352,235.56 is: 529,038.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,139 : 649,048.80 = 352,235.56 : x
  2. Step 2: Convert to fraction form
    432,139/649,048.80 = 352,235.56/x
  3. Step 3: Cross multiply
    432,139x = 649,048.80 × 352,235.56
  4. Step 4: Simplify right side
    432,139x = 228,618,067,535.33
  5. Step 5: Solve for x
    x = 228,618,067,535.33/432,139
  6. Step 6: Final answer
    x = 529,038.27

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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.