Home / 388,909,329-536,662,429.78-219,354,223.14

Finding the Fourth Proportional to 388,909,329, 536,662,429.78 and 219,354,223.14

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Solution

The fourth proportional to 388,909,329, 536,662,429.78 and 219,354,223.14 is: 302,690,528.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,909,329 : 536,662,429.78 = 219,354,223.14 : x
  2. Step 2: Convert to fraction form
    388,909,329/536,662,429.78 = 219,354,223.14/x
  3. Step 3: Cross multiply
    388,909,329x = 536,662,429.78 × 219,354,223.14
  4. Step 4: Simplify right side
    388,909,329x = 117,719,170,372,816,688
  5. Step 5: Solve for x
    x = 117,719,170,372,816,688/388,909,329
  6. Step 6: Final answer
    x = 302,690,528.60

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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.