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Finding the Fourth Proportional to 371,840.46, 512,994.96 and 275,275.45

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Solution

The fourth proportional to 371,840.46, 512,994.96 and 275,275.45 is: 379,772.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,840.46 : 512,994.96 = 275,275.45 : x
  2. Step 2: Convert to fraction form
    371,840.46/512,994.96 = 275,275.45/x
  3. Step 3: Cross multiply
    371,840.46x = 512,994.96 × 275,275.45
  4. Step 4: Simplify right side
    371,840.46x = 141,214,920,768.23
  5. Step 5: Solve for x
    x = 141,214,920,768.23/371,840.46
  6. Step 6: Final answer
    x = 379,772.87

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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.