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Finding the Fourth Proportional to 290,248,234.85, 407,495,441.35 and 290,248,234.85

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Solution

The fourth proportional to 290,248,234.85, 407,495,441.35 and 290,248,234.85 is: 407,495,441.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,248,234.85 : 407,495,441.35 = 290,248,234.85 : x
  2. Step 2: Convert to fraction form
    290,248,234.85/407,495,441.35 = 290,248,234.85/x
  3. Step 3: Cross multiply
    290,248,234.85x = 407,495,441.35 × 290,248,234.85
  4. Step 4: Simplify right side
    290,248,234.85x = 118,274,832,561,259,216
  5. Step 5: Solve for x
    x = 118,274,832,561,259,216/290,248,234.85
  6. Step 6: Final answer
    x = 407,495,441.35

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.