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Finding the Fourth Proportional to 438,002.40, 656,811.60 and 201,266.40

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Solution

The fourth proportional to 438,002.40, 656,811.60 and 201,266.40 is: 301,811.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,002.40 : 656,811.60 = 201,266.40 : x
  2. Step 2: Convert to fraction form
    438,002.40/656,811.60 = 201,266.40/x
  3. Step 3: Cross multiply
    438,002.40x = 656,811.60 × 201,266.40
  4. Step 4: Simplify right side
    438,002.40x = 132,194,106,210.24
  5. Step 5: Solve for x
    x = 132,194,106,210.24/438,002.40
  6. Step 6: Final answer
    x = 301,811.37

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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.