Home / 315,759,123.87-471,325,942.07-278,483,852.13

Finding the Fourth Proportional to 315,759,123.87, 471,325,942.07 and 278,483,852.13

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Solution

The fourth proportional to 315,759,123.87, 471,325,942.07 and 278,483,852.13 is: 415,686,053.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,759,123.87 : 471,325,942.07 = 278,483,852.13 : x
  2. Step 2: Convert to fraction form
    315,759,123.87/471,325,942.07 = 278,483,852.13/x
  3. Step 3: Cross multiply
    315,759,123.87x = 471,325,942.07 × 278,483,852.13
  4. Step 4: Simplify right side
    315,759,123.87x = 131,256,663,955,062,400
  5. Step 5: Solve for x
    x = 131,256,663,955,062,400/315,759,123.87
  6. Step 6: Final answer
    x = 415,686,053.17

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.