Home / 218,938,081.20-328,365,131.40-65,589,140.40

Finding the Fourth Proportional to 218,938,081.20, 328,365,131.40 and 65,589,140.40

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Solution

The fourth proportional to 218,938,081.20, 328,365,131.40 and 65,589,140.40 is: 98,371,131.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,938,081.20 : 328,365,131.40 = 65,589,140.40 : x
  2. Step 2: Convert to fraction form
    218,938,081.20/328,365,131.40 = 65,589,140.40/x
  3. Step 3: Cross multiply
    218,938,081.20x = 328,365,131.40 × 65,589,140.40
  4. Step 4: Simplify right side
    218,938,081.20x = 21,537,186,705,859,048
  5. Step 5: Solve for x
    x = 21,537,186,705,859,048/218,938,081.20
  6. Step 6: Final answer
    x = 98,371,131.18

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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.