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Finding the Fourth Proportional to 329,402.72, 454,408.80 and 208,340.12

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Solution

The fourth proportional to 329,402.72, 454,408.80 and 208,340.12 is: 287,403.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,402.72 : 454,408.80 = 208,340.12 : x
  2. Step 2: Convert to fraction form
    329,402.72/454,408.80 = 208,340.12/x
  3. Step 3: Cross multiply
    329,402.72x = 454,408.80 × 208,340.12
  4. Step 4: Simplify right side
    329,402.72x = 94,671,583,921.06
  5. Step 5: Solve for x
    x = 94,671,583,921.06/329,402.72
  6. Step 6: Final answer
    x = 287,403.77

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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.