Home / 287,739.70-431,733.93-154,464.32

Finding the Fourth Proportional to 287,739.70, 431,733.93 and 154,464.32

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Solution

The fourth proportional to 287,739.70, 431,733.93 and 154,464.32 is: 231,763.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,739.70 : 431,733.93 = 154,464.32 : x
  2. Step 2: Convert to fraction form
    287,739.70/431,733.93 = 154,464.32/x
  3. Step 3: Cross multiply
    287,739.70x = 431,733.93 × 154,464.32
  4. Step 4: Simplify right side
    287,739.70x = 66,687,487,918.38
  5. Step 5: Solve for x
    x = 66,687,487,918.38/287,739.70
  6. Step 6: Final answer
    x = 231,763.25

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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.