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Finding the Fourth Proportional to 201,879,001.80, 302,818,502.70 and 65,578,163.40

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Solution

The fourth proportional to 201,879,001.80, 302,818,502.70 and 65,578,163.40 is: 98,367,245.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,879,001.80 : 302,818,502.70 = 65,578,163.40 : x
  2. Step 2: Convert to fraction form
    201,879,001.80/302,818,502.70 = 65,578,163.40/x
  3. Step 3: Cross multiply
    201,879,001.80x = 302,818,502.70 × 65,578,163.40
  4. Step 4: Simplify right side
    201,879,001.80x = 19,858,281,250,603,940
  5. Step 5: Solve for x
    x = 19,858,281,250,603,940/201,879,001.80
  6. Step 6: Final answer
    x = 98,367,245.10

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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.