Home / 386,369.28-533,215.20-216,614.40

Finding the Fourth Proportional to 386,369.28, 533,215.20 and 216,614.40

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Solution

The fourth proportional to 386,369.28, 533,215.20 and 216,614.40 is: 298,942.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,369.28 : 533,215.20 = 216,614.40 : x
  2. Step 2: Convert to fraction form
    386,369.28/533,215.20 = 216,614.40/x
  3. Step 3: Cross multiply
    386,369.28x = 533,215.20 × 216,614.40
  4. Step 4: Simplify right side
    386,369.28x = 115,502,090,618.88
  5. Step 5: Solve for x
    x = 115,502,090,618.88/386,369.28
  6. Step 6: Final answer
    x = 298,942.22

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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.