Home / 386,897.52-533,970.72-217,140.96

Finding the Fourth Proportional to 386,897.52, 533,970.72 and 217,140.96

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Solution

The fourth proportional to 386,897.52, 533,970.72 and 217,140.96 is: 299,683.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,897.52 : 533,970.72 = 217,140.96 : x
  2. Step 2: Convert to fraction form
    386,897.52/533,970.72 = 217,140.96/x
  3. Step 3: Cross multiply
    386,897.52x = 533,970.72 × 217,140.96
  4. Step 4: Simplify right side
    386,897.52x = 115,946,914,752.69
  5. Step 5: Solve for x
    x = 115,946,914,752.69/386,897.52
  6. Step 6: Final answer
    x = 299,683.79

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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.