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Finding the Fourth Proportional to 426,259.48, 639,491.40 and 141,952.49

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Solution

The fourth proportional to 426,259.48, 639,491.40 and 141,952.49 is: 212,962.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,259.48 : 639,491.40 = 141,952.49 : x
  2. Step 2: Convert to fraction form
    426,259.48/639,491.40 = 141,952.49/x
  3. Step 3: Cross multiply
    426,259.48x = 639,491.40 × 141,952.49
  4. Step 4: Simplify right side
    426,259.48x = 90,777,396,563.59
  5. Step 5: Solve for x
    x = 90,777,396,563.59/426,259.48
  6. Step 6: Final answer
    x = 212,962.76

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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.