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Finding the Fourth Proportional to 371,968.71, 513,410.98 and 228,856.90

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Solution

The fourth proportional to 371,968.71, 513,410.98 and 228,856.90 is: 315,880.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,968.71 : 513,410.98 = 228,856.90 : x
  2. Step 2: Convert to fraction form
    371,968.71/513,410.98 = 228,856.90/x
  3. Step 3: Cross multiply
    371,968.71x = 513,410.98 × 228,856.90
  4. Step 4: Simplify right side
    371,968.71x = 117,497,645,308.76
  5. Step 5: Solve for x
    x = 117,497,645,308.76/371,968.71
  6. Step 6: Final answer
    x = 315,880.45

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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.