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Finding the Fourth Proportional to 437,810.40, 657,007.20 and 201,031.20

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Solution

The fourth proportional to 437,810.40, 657,007.20 and 201,031.20 is: 301,680.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,810.40 : 657,007.20 = 201,031.20 : x
  2. Step 2: Convert to fraction form
    437,810.40/657,007.20 = 201,031.20/x
  3. Step 3: Cross multiply
    437,810.40x = 657,007.20 × 201,031.20
  4. Step 4: Simplify right side
    437,810.40x = 132,078,945,824.64
  5. Step 5: Solve for x
    x = 132,078,945,824.64/437,810.40
  6. Step 6: Final answer
    x = 301,680.70

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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.