Home / 208,447,239.38-312,670,868.78-142,803,647.06

Finding the Fourth Proportional to 208,447,239.38, 312,670,868.78 and 142,803,647.06

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Solution

The fourth proportional to 208,447,239.38, 312,670,868.78 and 142,803,647.06 is: 214,205,477.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,447,239.38 : 312,670,868.78 = 142,803,647.06 : x
  2. Step 2: Convert to fraction form
    208,447,239.38/312,670,868.78 = 142,803,647.06/x
  3. Step 3: Cross multiply
    208,447,239.38x = 312,670,868.78 × 142,803,647.06
  4. Step 4: Simplify right side
    208,447,239.38x = 44,650,540,389,996,352
  5. Step 5: Solve for x
    x = 44,650,540,389,996,352/208,447,239.38
  6. Step 6: Final answer
    x = 214,205,477.24

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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.