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Finding the Fourth Proportional to 388,862,620.02, 583,351,930.03 and 143,200,365.94

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Solution

The fourth proportional to 388,862,620.02, 583,351,930.03 and 143,200,365.94 is: 214,821,907.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,862,620.02 : 583,351,930.03 = 143,200,365.94 : x
  2. Step 2: Convert to fraction form
    388,862,620.02/583,351,930.03 = 143,200,365.94/x
  3. Step 3: Cross multiply
    388,862,620.02x = 583,351,930.03 × 143,200,365.94
  4. Step 4: Simplify right side
    388,862,620.02x = 83,536,209,852,101,264
  5. Step 5: Solve for x
    x = 83,536,209,852,101,264/388,862,620.02
  6. Step 6: Final answer
    x = 214,821,907.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.