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Finding the Fourth Proportional to 275,070.90, 379,636.70 and 152,590.69

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Solution

The fourth proportional to 275,070.90, 379,636.70 and 152,590.69 is: 210,596.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,070.90 : 379,636.70 = 152,590.69 : x
  2. Step 2: Convert to fraction form
    275,070.90/379,636.70 = 152,590.69/x
  3. Step 3: Cross multiply
    275,070.90x = 379,636.70 × 152,590.69
  4. Step 4: Simplify right side
    275,070.90x = 57,929,026,002.32
  5. Step 5: Solve for x
    x = 57,929,026,002.32/275,070.90
  6. Step 6: Final answer
    x = 210,596.71

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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.