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Finding the Fourth Proportional to 418,889.90, 578,073.98 and 227,903.45

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Solution

The fourth proportional to 418,889.90, 578,073.98 and 227,903.45 is: 314,509.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,889.90 : 578,073.98 = 227,903.45 : x
  2. Step 2: Convert to fraction form
    418,889.90/578,073.98 = 227,903.45/x
  3. Step 3: Cross multiply
    418,889.90x = 578,073.98 × 227,903.45
  4. Step 4: Simplify right side
    418,889.90x = 131,745,052,076.62
  5. Step 5: Solve for x
    x = 131,745,052,076.62/418,889.90
  6. Step 6: Final answer
    x = 314,509.97

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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.