Home / 428,233.40-642,094.10-262,140.60

Finding the Fourth Proportional to 428,233.40, 642,094.10 and 262,140.60

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Solution

The fourth proportional to 428,233.40, 642,094.10 and 262,140.60 is: 393,054.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,233.40 : 642,094.10 = 262,140.60 : x
  2. Step 2: Convert to fraction form
    428,233.40/642,094.10 = 262,140.60/x
  3. Step 3: Cross multiply
    428,233.40x = 642,094.10 × 262,140.60
  4. Step 4: Simplify right side
    428,233.40x = 168,318,932,630.46
  5. Step 5: Solve for x
    x = 168,318,932,630.46/428,233.40
  6. Step 6: Final answer
    x = 393,054.19

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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.