Home / 385,745,805.12-532,328,805.96-209,533,938.30

Finding the Fourth Proportional to 385,745,805.12, 532,328,805.96 and 209,533,938.30

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Solution

The fourth proportional to 385,745,805.12, 532,328,805.96 and 209,533,938.30 is: 289,156,614.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,745,805.12 : 532,328,805.96 = 209,533,938.30 : x
  2. Step 2: Convert to fraction form
    385,745,805.12/532,328,805.96 = 209,533,938.30/x
  3. Step 3: Cross multiply
    385,745,805.12x = 532,328,805.96 × 209,533,938.30
  4. Step 4: Simplify right side
    385,745,805.12x = 111,540,951,184,121,072
  5. Step 5: Solve for x
    x = 111,540,951,184,121,072/385,745,805.12
  6. Step 6: Final answer
    x = 289,156,614.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.