Home / 289,539,856.70-399,567,841.40-157,380,771.65

Finding the Fourth Proportional to 289,539,856.70, 399,567,841.40 and 157,380,771.65

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Solution

The fourth proportional to 289,539,856.70, 399,567,841.40 and 157,380,771.65 is: 217,187,008.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,539,856.70 : 399,567,841.40 = 157,380,771.65 : x
  2. Step 2: Convert to fraction form
    289,539,856.70/399,567,841.40 = 157,380,771.65/x
  3. Step 3: Cross multiply
    289,539,856.70x = 399,567,841.40 × 157,380,771.65
  4. Step 4: Simplify right side
    289,539,856.70x = 62,884,295,206,056,816
  5. Step 5: Solve for x
    x = 62,884,295,206,056,816/289,539,856.70
  6. Step 6: Final answer
    x = 217,187,008.11

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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.