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Finding the Fourth Proportional to 482,295.74, 665,434.40 and 278,332.34

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Solution

The fourth proportional to 482,295.74, 665,434.40 and 278,332.34 is: 384,021.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,295.74 : 665,434.40 = 278,332.34 : x
  2. Step 2: Convert to fraction form
    482,295.74/665,434.40 = 278,332.34/x
  3. Step 3: Cross multiply
    482,295.74x = 665,434.40 × 278,332.34
  4. Step 4: Simplify right side
    482,295.74x = 185,211,913,668.50
  5. Step 5: Solve for x
    x = 185,211,913,668.50/482,295.74
  6. Step 6: Final answer
    x = 384,021.46

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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.