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Finding the Fourth Proportional to 500,342.71, 750,429.54 and 140,430.97

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Solution

The fourth proportional to 500,342.71, 750,429.54 and 140,430.97 is: 210,622.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,342.71 : 750,429.54 = 140,430.97 : x
  2. Step 2: Convert to fraction form
    500,342.71/750,429.54 = 140,430.97/x
  3. Step 3: Cross multiply
    500,342.71x = 750,429.54 × 140,430.97
  4. Step 4: Simplify right side
    500,342.71x = 105,383,550,178.24
  5. Step 5: Solve for x
    x = 105,383,550,178.24/500,342.71
  6. Step 6: Final answer
    x = 210,622.73

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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.