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Finding the Fourth Proportional to 283,607.40, 425,308.70 and 143,319.40

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Solution

The fourth proportional to 283,607.40, 425,308.70 and 143,319.40 is: 214,927.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,607.40 : 425,308.70 = 143,319.40 : x
  2. Step 2: Convert to fraction form
    283,607.40/425,308.70 = 143,319.40/x
  3. Step 3: Cross multiply
    283,607.40x = 425,308.70 × 143,319.40
  4. Step 4: Simplify right side
    283,607.40x = 60,954,987,698.78
  5. Step 5: Solve for x
    x = 60,954,987,698.78/283,607.40
  6. Step 6: Final answer
    x = 214,927.35

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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.