Home / 388,225.12-535,749-218,462.08

Finding the Fourth Proportional to 388,225.12, 535,749 and 218,462.08

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Solution

The fourth proportional to 388,225.12, 535,749 and 218,462.08 is: 301,476.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,225.12 : 535,749 = 218,462.08 : x
  2. Step 2: Convert to fraction form
    388,225.12/535,749 = 218,462.08/x
  3. Step 3: Cross multiply
    388,225.12x = 535,749 × 218,462.08
  4. Step 4: Simplify right side
    388,225.12x = 117,040,840,897.92
  5. Step 5: Solve for x
    x = 117,040,840,897.92/388,225.12
  6. Step 6: Final answer
    x = 301,476.73

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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.