Home / 218,938,077.20-328,365,125.40-65,589,136.40

Finding the Fourth Proportional to 218,938,077.20, 328,365,125.40 and 65,589,136.40

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Solution

The fourth proportional to 218,938,077.20, 328,365,125.40 and 65,589,136.40 is: 98,371,125.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,938,077.20 : 328,365,125.40 = 65,589,136.40 : x
  2. Step 2: Convert to fraction form
    218,938,077.20/328,365,125.40 = 65,589,136.40/x
  3. Step 3: Cross multiply
    218,938,077.20x = 328,365,125.40 × 65,589,136.40
  4. Step 4: Simplify right side
    218,938,077.20x = 21,537,184,998,863,704
  5. Step 5: Solve for x
    x = 21,537,184,998,863,704/218,938,077.20
  6. Step 6: Final answer
    x = 98,371,125.18

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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.