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Finding the Fourth Proportional to 283,750.40, 391,250.40 and 212,009.60

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Solution

The fourth proportional to 283,750.40, 391,250.40 and 212,009.60 is: 292,330.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,750.40 : 391,250.40 = 212,009.60 : x
  2. Step 2: Convert to fraction form
    283,750.40/391,250.40 = 212,009.60/x
  3. Step 3: Cross multiply
    283,750.40x = 391,250.40 × 212,009.60
  4. Step 4: Simplify right side
    283,750.40x = 82,948,840,803.84
  5. Step 5: Solve for x
    x = 82,948,840,803.84/283,750.40
  6. Step 6: Final answer
    x = 292,330.30

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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.