Home / 278,057,108.40-417,085,662.60-213,685,825.20

Finding the Fourth Proportional to 278,057,108.40, 417,085,662.60 and 213,685,825.20

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Solution

The fourth proportional to 278,057,108.40, 417,085,662.60 and 213,685,825.20 is: 320,528,737.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,057,108.40 : 417,085,662.60 = 213,685,825.20 : x
  2. Step 2: Convert to fraction form
    278,057,108.40/417,085,662.60 = 213,685,825.20/x
  3. Step 3: Cross multiply
    278,057,108.40x = 417,085,662.60 × 213,685,825.20
  4. Step 4: Simplify right side
    278,057,108.40x = 89,125,293,991,769,776
  5. Step 5: Solve for x
    x = 89,125,293,991,769,776/278,057,108.40
  6. Step 6: Final answer
    x = 320,528,737.80

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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.