Home / 218,937,939.20-328,364,918.40-65,588,998.40

Finding the Fourth Proportional to 218,937,939.20, 328,364,918.40 and 65,588,998.40

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Solution

The fourth proportional to 218,937,939.20, 328,364,918.40 and 65,588,998.40 is: 98,370,918.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,937,939.20 : 328,364,918.40 = 65,588,998.40 : x
  2. Step 2: Convert to fraction form
    218,937,939.20/328,364,918.40 = 65,588,998.40/x
  3. Step 3: Cross multiply
    218,937,939.20x = 328,364,918.40 × 65,588,998.40
  4. Step 4: Simplify right side
    218,937,939.20x = 21,537,126,107,553,728
  5. Step 5: Solve for x
    x = 21,537,126,107,553,728/218,937,939.20
  6. Step 6: Final answer
    x = 98,370,918.20

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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.