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Finding the Fourth Proportional to 258,707.51, 357,016.27 and 145,530.26

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Solution

The fourth proportional to 258,707.51, 357,016.27 and 145,530.26 is: 200,831.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,707.51 : 357,016.27 = 145,530.26 : x
  2. Step 2: Convert to fraction form
    258,707.51/357,016.27 = 145,530.26/x
  3. Step 3: Cross multiply
    258,707.51x = 357,016.27 × 145,530.26
  4. Step 4: Simplify right side
    258,707.51x = 51,956,670,597.33
  5. Step 5: Solve for x
    x = 51,956,670,597.33/258,707.51
  6. Step 6: Final answer
    x = 200,831.71

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1.5x scale

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.