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Finding the Fourth Proportional to 545,751,018.80, 818,626,528.20 and 218,064,498.20

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Solution

The fourth proportional to 545,751,018.80, 818,626,528.20 and 218,064,498.20 is: 327,096,747.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,751,018.80 : 818,626,528.20 = 218,064,498.20 : x
  2. Step 2: Convert to fraction form
    545,751,018.80/818,626,528.20 = 218,064,498.20/x
  3. Step 3: Cross multiply
    545,751,018.80x = 818,626,528.20 × 218,064,498.20
  4. Step 4: Simplify right side
    545,751,018.80x = 178,513,383,085,141,152
  5. Step 5: Solve for x
    x = 178,513,383,085,141,152/545,751,018.80
  6. Step 6: Final answer
    x = 327,096,747.30

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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.