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Finding the Fourth Proportional to 371,969.35, 513,411.84 and 228,857.54

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Solution

The fourth proportional to 371,969.35, 513,411.84 and 228,857.54 is: 315,881.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,969.35 : 513,411.84 = 228,857.54 : x
  2. Step 2: Convert to fraction form
    371,969.35/513,411.84 = 228,857.54/x
  3. Step 3: Cross multiply
    371,969.35x = 513,411.84 × 228,857.54
  4. Step 4: Simplify right side
    371,969.35x = 117,498,168,142.21
  5. Step 5: Solve for x
    x = 117,498,168,142.21/371,969.35
  6. Step 6: Final answer
    x = 315,881.32

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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.