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Finding the Fourth Proportional to 312,300.40, 430,958.22 and 183,220.93

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Solution

The fourth proportional to 312,300.40, 430,958.22 and 183,220.93 is: 252,835.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,300.40 : 430,958.22 = 183,220.93 : x
  2. Step 2: Convert to fraction form
    312,300.40/430,958.22 = 183,220.93/x
  3. Step 3: Cross multiply
    312,300.40x = 430,958.22 × 183,220.93
  4. Step 4: Simplify right side
    312,300.40x = 78,960,565,859.54
  5. Step 5: Solve for x
    x = 78,960,565,859.54/312,300.40
  6. Step 6: Final answer
    x = 252,835.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.