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Finding the Fourth Proportional to 516,491.96, 774,782.58 and 142,514.96

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Solution

The fourth proportional to 516,491.96, 774,782.58 and 142,514.96 is: 213,784.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,491.96 : 774,782.58 = 142,514.96 : x
  2. Step 2: Convert to fraction form
    516,491.96/774,782.58 = 142,514.96/x
  3. Step 3: Cross multiply
    516,491.96x = 774,782.58 × 142,514.96
  4. Step 4: Simplify right side
    516,491.96x = 110,418,108,397.40
  5. Step 5: Solve for x
    x = 110,418,108,397.40/516,491.96
  6. Step 6: Final answer
    x = 213,784.76

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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.