Home / 218,791,981.60-328,237,738.80-127,868,768.80

Finding the Fourth Proportional to 218,791,981.60, 328,237,738.80 and 127,868,768.80

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Solution

The fourth proportional to 218,791,981.60, 328,237,738.80 and 127,868,768.80 is: 191,832,238.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,791,981.60 : 328,237,738.80 = 127,868,768.80 : x
  2. Step 2: Convert to fraction form
    218,791,981.60/328,237,738.80 = 127,868,768.80/x
  3. Step 3: Cross multiply
    218,791,981.60x = 328,237,738.80 × 127,868,768.80
  4. Step 4: Simplify right side
    218,791,981.60x = 41,971,355,534,051,992
  5. Step 5: Solve for x
    x = 41,971,355,534,051,992/218,791,981.60
  6. Step 6: Final answer
    x = 191,832,238.22

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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.