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Finding the Fourth Proportional to 371,559.41, 512,783.60 and 210,443.12

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Solution

The fourth proportional to 371,559.41, 512,783.60 and 210,443.12 is: 290,429.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,559.41 : 512,783.60 = 210,443.12 : x
  2. Step 2: Convert to fraction form
    371,559.41/512,783.60 = 210,443.12/x
  3. Step 3: Cross multiply
    371,559.41x = 512,783.60 × 210,443.12
  4. Step 4: Simplify right side
    371,559.41x = 107,911,778,104.91
  5. Step 5: Solve for x
    x = 107,911,778,104.91/371,559.41
  6. Step 6: Final answer
    x = 290,429.41

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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.