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Finding the Fourth Proportional to 331,652.48, 457,681.98 and 188,420.40

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Solution

The fourth proportional to 331,652.48, 457,681.98 and 188,420.40 is: 260,021.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,652.48 : 457,681.98 = 188,420.40 : x
  2. Step 2: Convert to fraction form
    331,652.48/457,681.98 = 188,420.40/x
  3. Step 3: Cross multiply
    331,652.48x = 457,681.98 × 188,420.40
  4. Step 4: Simplify right side
    331,652.48x = 86,236,621,744.39
  5. Step 5: Solve for x
    x = 86,236,621,744.39/331,652.48
  6. Step 6: Final answer
    x = 260,021.04

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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.