Home / 442,858,445.40-664,287,668.10-212,772,048.60

Finding the Fourth Proportional to 442,858,445.40, 664,287,668.10 and 212,772,048.60

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Solution

The fourth proportional to 442,858,445.40, 664,287,668.10 and 212,772,048.60 is: 319,158,072.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,858,445.40 : 664,287,668.10 = 212,772,048.60 : x
  2. Step 2: Convert to fraction form
    442,858,445.40/664,287,668.10 = 212,772,048.60/x
  3. Step 3: Cross multiply
    442,858,445.40x = 664,287,668.10 × 212,772,048.60
  4. Step 4: Simplify right side
    442,858,445.40x = 141,341,848,001,353,872
  5. Step 5: Solve for x
    x = 141,341,848,001,353,872/442,858,445.40
  6. Step 6: Final answer
    x = 319,158,072.90

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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.