Home / 402,193,865.80-603,274,378.36-139,938,442.12

Finding the Fourth Proportional to 402,193,865.80, 603,274,378.36 and 139,938,442.12

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Solution

The fourth proportional to 402,193,865.80, 603,274,378.36 and 139,938,442.12 is: 209,901,949.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,193,865.80 : 603,274,378.36 = 139,938,442.12 : x
  2. Step 2: Convert to fraction form
    402,193,865.80/603,274,378.36 = 139,938,442.12/x
  3. Step 3: Cross multiply
    402,193,865.80x = 603,274,378.36 × 139,938,442.12
  4. Step 4: Simplify right side
    402,193,865.80x = 84,421,276,678,609,840
  5. Step 5: Solve for x
    x = 84,421,276,678,609,840/402,193,865.80
  6. Step 6: Final answer
    x = 209,901,949.92

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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.