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Finding the Fourth Proportional to 331,656.90, 457,688.02 and 188,424.80

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Solution

The fourth proportional to 331,656.90, 457,688.02 and 188,424.80 is: 260,027.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,656.90 : 457,688.02 = 188,424.80 : x
  2. Step 2: Convert to fraction form
    331,656.90/457,688.02 = 188,424.80/x
  3. Step 3: Cross multiply
    331,656.90x = 457,688.02 × 188,424.80
  4. Step 4: Simplify right side
    331,656.90x = 86,239,773,630.90
  5. Step 5: Solve for x
    x = 86,239,773,630.90/331,656.90
  6. Step 6: Final answer
    x = 260,027.08

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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.