Home / 384,890,279.30-531,152,532.54-208,678,615.46

Finding the Fourth Proportional to 384,890,279.30, 531,152,532.54 and 208,678,615.46

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Solution

The fourth proportional to 384,890,279.30, 531,152,532.54 and 208,678,615.46 is: 287,978,629.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,890,279.30 : 531,152,532.54 = 208,678,615.46 : x
  2. Step 2: Convert to fraction form
    384,890,279.30/531,152,532.54 = 208,678,615.46/x
  3. Step 3: Cross multiply
    384,890,279.30x = 531,152,532.54 × 208,678,615.46
  4. Step 4: Simplify right side
    384,890,279.30x = 110,840,175,089,847,680
  5. Step 5: Solve for x
    x = 110,840,175,089,847,680/384,890,279.30
  6. Step 6: Final answer
    x = 287,978,629.37

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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.