Home / 290,020,352.12-435,026,268.68-71,670,688.32

Finding the Fourth Proportional to 290,020,352.12, 435,026,268.68 and 71,670,688.32

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Solution

The fourth proportional to 290,020,352.12, 435,026,268.68 and 71,670,688.32 is: 107,504,979.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,020,352.12 : 435,026,268.68 = 71,670,688.32 : x
  2. Step 2: Convert to fraction form
    290,020,352.12/435,026,268.68 = 71,670,688.32/x
  3. Step 3: Cross multiply
    290,020,352.12x = 435,026,268.68 × 71,670,688.32
  4. Step 4: Simplify right side
    290,020,352.12x = 31,178,632,113,218,504
  5. Step 5: Solve for x
    x = 31,178,632,113,218,504/290,020,352.12
  6. Step 6: Final answer
    x = 107,504,979.86

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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.