Home / 278,541,813.22-384,391,696.91-153,105,621.76

Finding the Fourth Proportional to 278,541,813.22, 384,391,696.91 and 153,105,621.76

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Solution

The fourth proportional to 278,541,813.22, 384,391,696.91 and 153,105,621.76 is: 211,287,953.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,541,813.22 : 384,391,696.91 = 153,105,621.76 : x
  2. Step 2: Convert to fraction form
    278,541,813.22/384,391,696.91 = 153,105,621.76/x
  3. Step 3: Cross multiply
    278,541,813.22x = 384,391,696.91 × 153,105,621.76
  4. Step 4: Simplify right side
    278,541,813.22x = 58,852,529,754,501,976
  5. Step 5: Solve for x
    x = 58,852,529,754,501,976/278,541,813.22
  6. Step 6: Final answer
    x = 211,287,953.77

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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.