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Finding the Fourth Proportional to 283,615.40, 425,320.70 and 143,327.40

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Solution

The fourth proportional to 283,615.40, 425,320.70 and 143,327.40 is: 214,939.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,615.40 : 425,320.70 = 143,327.40 : x
  2. Step 2: Convert to fraction form
    283,615.40/425,320.70 = 143,327.40/x
  3. Step 3: Cross multiply
    283,615.40x = 425,320.70 × 143,327.40
  4. Step 4: Simplify right side
    283,615.40x = 60,960,110,097.18
  5. Step 5: Solve for x
    x = 60,960,110,097.18/283,615.40
  6. Step 6: Final answer
    x = 214,939.35

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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.