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Finding the Fourth Proportional to 428,173.74, 590,915.78 and 237,204.90

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Solution

The fourth proportional to 428,173.74, 590,915.78 and 237,204.90 is: 327,362.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,173.74 : 590,915.78 = 237,204.90 : x
  2. Step 2: Convert to fraction form
    428,173.74/590,915.78 = 237,204.90/x
  3. Step 3: Cross multiply
    428,173.74x = 590,915.78 × 237,204.90
  4. Step 4: Simplify right side
    428,173.74x = 140,168,118,503.32
  5. Step 5: Solve for x
    x = 140,168,118,503.32/428,173.74
  6. Step 6: Final answer
    x = 327,362.72

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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.