Home / 388,909,330-536,662,431.16-219,354,224.14

Finding the Fourth Proportional to 388,909,330, 536,662,431.16 and 219,354,224.14

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Solution

The fourth proportional to 388,909,330, 536,662,431.16 and 219,354,224.14 is: 302,690,529.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,909,330 : 536,662,431.16 = 219,354,224.14 : x
  2. Step 2: Convert to fraction form
    388,909,330/536,662,431.16 = 219,354,224.14/x
  3. Step 3: Cross multiply
    388,909,330x = 536,662,431.16 × 219,354,224.14
  4. Step 4: Simplify right side
    388,909,330x = 117,719,171,212,187,952
  5. Step 5: Solve for x
    x = 117,719,171,212,187,952/388,909,330
  6. Step 6: Final answer
    x = 302,690,529.98

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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.