Home / 266,779,920.20-400,169,880.30-221,430,288.20

Finding the Fourth Proportional to 266,779,920.20, 400,169,880.30 and 221,430,288.20

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Solution

The fourth proportional to 266,779,920.20, 400,169,880.30 and 221,430,288.20 is: 332,145,432.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,779,920.20 : 400,169,880.30 = 221,430,288.20 : x
  2. Step 2: Convert to fraction form
    266,779,920.20/400,169,880.30 = 221,430,288.20/x
  3. Step 3: Cross multiply
    266,779,920.20x = 400,169,880.30 × 221,430,288.20
  4. Step 4: Simplify right side
    266,779,920.20x = 88,609,731,923,788,496
  5. Step 5: Solve for x
    x = 88,609,731,923,788,496/266,779,920.20
  6. Step 6: Final answer
    x = 332,145,432.30

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1.5x scale

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.