Home / 386,370.28-533,216.58-216,615.40

Finding the Fourth Proportional to 386,370.28, 533,216.58 and 216,615.40

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Solution

The fourth proportional to 386,370.28, 533,216.58 and 216,615.40 is: 298,943.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,370.28 : 533,216.58 = 216,615.40 : x
  2. Step 2: Convert to fraction form
    386,370.28/533,216.58 = 216,615.40/x
  3. Step 3: Cross multiply
    386,370.28x = 533,216.58 × 216,615.40
  4. Step 4: Simplify right side
    386,370.28x = 115,502,922,763.33
  5. Step 5: Solve for x
    x = 115,502,922,763.33/386,370.28
  6. Step 6: Final answer
    x = 298,943.60

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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.