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Finding the Fourth Proportional to 336,478.10, 464,390.15 and 215,755.70

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Solution

The fourth proportional to 336,478.10, 464,390.15 and 215,755.70 is: 297,775.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,478.10 : 464,390.15 = 215,755.70 : x
  2. Step 2: Convert to fraction form
    336,478.10/464,390.15 = 215,755.70/x
  3. Step 3: Cross multiply
    336,478.10x = 464,390.15 × 215,755.70
  4. Step 4: Simplify right side
    336,478.10x = 100,194,818,485.63
  5. Step 5: Solve for x
    x = 100,194,818,485.63/336,478.10
  6. Step 6: Final answer
    x = 297,775.16

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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.