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Finding the Fourth Proportional to 289,807.21, 399,471.84 and 228,453.35

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Solution

The fourth proportional to 289,807.21, 399,471.84 and 228,453.35 is: 314,901.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,807.21 : 399,471.84 = 228,453.35 : x
  2. Step 2: Convert to fraction form
    289,807.21/399,471.84 = 228,453.35/x
  3. Step 3: Cross multiply
    289,807.21x = 399,471.84 × 228,453.35
  4. Step 4: Simplify right side
    289,807.21x = 91,260,681,077.34
  5. Step 5: Solve for x
    x = 91,260,681,077.34/289,807.21
  6. Step 6: Final answer
    x = 314,901.35

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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.