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Finding the Fourth Proportional to 199,589,257.80, 299,383,886.70 and 90,466,705.80

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Solution

The fourth proportional to 199,589,257.80, 299,383,886.70 and 90,466,705.80 is: 135,700,058.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,589,257.80 : 299,383,886.70 = 90,466,705.80 : x
  2. Step 2: Convert to fraction form
    199,589,257.80/299,383,886.70 = 90,466,705.80/x
  3. Step 3: Cross multiply
    199,589,257.80x = 299,383,886.70 × 90,466,705.80
  4. Step 4: Simplify right side
    199,589,257.80x = 27,084,273,999,349,432
  5. Step 5: Solve for x
    x = 27,084,273,999,349,432/199,589,257.80
  6. Step 6: Final answer
    x = 135,700,058.70

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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.