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Finding the Fourth Proportional to 301,392.70, 451,570.65 and 143,280.70

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Solution

The fourth proportional to 301,392.70, 451,570.65 and 143,280.70 is: 214,674.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,392.70 : 451,570.65 = 143,280.70 : x
  2. Step 2: Convert to fraction form
    301,392.70/451,570.65 = 143,280.70/x
  3. Step 3: Cross multiply
    301,392.70x = 451,570.65 × 143,280.70
  4. Step 4: Simplify right side
    301,392.70x = 64,701,358,831.46
  5. Step 5: Solve for x
    x = 64,701,358,831.46/301,392.70
  6. Step 6: Final answer
    x = 214,674.61

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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.