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Finding the Fourth Proportional to 310,596.79, 465,905.59 and 85,938.43

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Solution

The fourth proportional to 310,596.79, 465,905.59 and 85,938.43 is: 128,910.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,596.79 : 465,905.59 = 85,938.43 : x
  2. Step 2: Convert to fraction form
    310,596.79/465,905.59 = 85,938.43/x
  3. Step 3: Cross multiply
    310,596.79x = 465,905.59 × 85,938.43
  4. Step 4: Simplify right side
    310,596.79x = 40,039,194,932.82
  5. Step 5: Solve for x
    x = 40,039,194,932.82/310,596.79
  6. Step 6: Final answer
    x = 128,910.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.