Home / 386,785.18-533,772.75-217,031.86

Finding the Fourth Proportional to 386,785.18, 533,772.75 and 217,031.86

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Solution

The fourth proportional to 386,785.18, 533,772.75 and 217,031.86 is: 299,509.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,785.18 : 533,772.75 = 217,031.86 : x
  2. Step 2: Convert to fraction form
    386,785.18/533,772.75 = 217,031.86/x
  3. Step 3: Cross multiply
    386,785.18x = 533,772.75 × 217,031.86
  4. Step 4: Simplify right side
    386,785.18x = 115,845,692,749.82
  5. Step 5: Solve for x
    x = 115,845,692,749.82/386,785.18
  6. Step 6: Final answer
    x = 299,509.13

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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.