Home / 309,870,739.51-427,617,395.66-175,907,490.55

Finding the Fourth Proportional to 309,870,739.51, 427,617,395.66 and 175,907,490.55

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Solution

The fourth proportional to 309,870,739.51, 427,617,395.66 and 175,907,490.55 is: 242,749,938.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,870,739.51 : 427,617,395.66 = 175,907,490.55 : x
  2. Step 2: Convert to fraction form
    309,870,739.51/427,617,395.66 = 175,907,490.55/x
  3. Step 3: Cross multiply
    309,870,739.51x = 427,617,395.66 × 175,907,490.55
  4. Step 4: Simplify right side
    309,870,739.51x = 75,221,102,985,447,792
  5. Step 5: Solve for x
    x = 75,221,102,985,447,792/309,870,739.51
  6. Step 6: Final answer
    x = 242,749,938.59

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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.