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Finding the Fourth Proportional to 343,045.83, 514,319.07 and 143,422.85

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Solution

The fourth proportional to 343,045.83, 514,319.07 and 143,422.85 is: 215,029.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,045.83 : 514,319.07 = 143,422.85 : x
  2. Step 2: Convert to fraction form
    343,045.83/514,319.07 = 143,422.85/x
  3. Step 3: Cross multiply
    343,045.83x = 514,319.07 × 143,422.85
  4. Step 4: Simplify right side
    343,045.83x = 73,765,107,845.63
  5. Step 5: Solve for x
    x = 73,765,107,845.63/343,045.83
  6. Step 6: Final answer
    x = 215,029.89

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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.