Home / 208,447,243.13-312,670,874.42-142,803,650.81

Finding the Fourth Proportional to 208,447,243.13, 312,670,874.42 and 142,803,650.81

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Solution

The fourth proportional to 208,447,243.13, 312,670,874.42 and 142,803,650.81 is: 214,205,482.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,447,243.13 : 312,670,874.42 = 142,803,650.81 : x
  2. Step 2: Convert to fraction form
    208,447,243.13/312,670,874.42 = 142,803,650.81/x
  3. Step 3: Cross multiply
    208,447,243.13x = 312,670,874.42 × 142,803,650.81
  4. Step 4: Simplify right side
    208,447,243.13x = 44,650,542,366,853,672
  5. Step 5: Solve for x
    x = 44,650,542,366,853,672/208,447,243.13
  6. Step 6: Final answer
    x = 214,205,482.87

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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.