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Finding the Fourth Proportional to 353,483.56, 487,803.42 and 210,240.44

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Solution

The fourth proportional to 353,483.56, 487,803.42 and 210,240.44 is: 290,129.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,483.56 : 487,803.42 = 210,240.44 : x
  2. Step 2: Convert to fraction form
    353,483.56/487,803.42 = 210,240.44/x
  3. Step 3: Cross multiply
    353,483.56x = 487,803.42 × 210,240.44
  4. Step 4: Simplify right side
    353,483.56x = 102,556,005,654.31
  5. Step 5: Solve for x
    x = 102,556,005,654.31/353,483.56
  6. Step 6: Final answer
    x = 290,129.49

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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.