Home / 266,779,931.20-400,169,896.80-221,430,299.20

Finding the Fourth Proportional to 266,779,931.20, 400,169,896.80 and 221,430,299.20

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Solution

The fourth proportional to 266,779,931.20, 400,169,896.80 and 221,430,299.20 is: 332,145,448.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,779,931.20 : 400,169,896.80 = 221,430,299.20 : x
  2. Step 2: Convert to fraction form
    266,779,931.20/400,169,896.80 = 221,430,299.20/x
  3. Step 3: Cross multiply
    266,779,931.20x = 400,169,896.80 × 221,430,299.20
  4. Step 4: Simplify right side
    266,779,931.20x = 88,609,739,979,257,120
  5. Step 5: Solve for x
    x = 88,609,739,979,257,120/266,779,931.20
  6. Step 6: Final answer
    x = 332,145,448.80

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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.