Home / 388,679,448.81-536,377,679.76-212,468,162.23

Finding the Fourth Proportional to 388,679,448.81, 536,377,679.76 and 212,468,162.23

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Solution

The fourth proportional to 388,679,448.81, 536,377,679.76 and 212,468,162.23 is: 293,206,085.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,679,448.81 : 536,377,679.76 = 212,468,162.23 : x
  2. Step 2: Convert to fraction form
    388,679,448.81/536,377,679.76 = 212,468,162.23/x
  3. Step 3: Cross multiply
    388,679,448.81x = 536,377,679.76 × 212,468,162.23
  4. Step 4: Simplify right side
    388,679,448.81x = 113,963,179,881,265,888
  5. Step 5: Solve for x
    x = 113,963,179,881,265,888/388,679,448.81
  6. Step 6: Final answer
    x = 293,206,085.96

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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.