Home / 380,628.79-525,229.45-210,831.19

Finding the Fourth Proportional to 380,628.79, 525,229.45 and 210,831.19

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Solution

The fourth proportional to 380,628.79, 525,229.45 and 210,831.19 is: 290,925.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,628.79 : 525,229.45 = 210,831.19 : x
  2. Step 2: Convert to fraction form
    380,628.79/525,229.45 = 210,831.19/x
  3. Step 3: Cross multiply
    380,628.79x = 525,229.45 × 210,831.19
  4. Step 4: Simplify right side
    380,628.79x = 110,734,749,966.55
  5. Step 5: Solve for x
    x = 110,734,749,966.55/380,628.79
  6. Step 6: Final answer
    x = 290,925.84

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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.