Home / 388,280.45-535,825.93-218,514.58

Finding the Fourth Proportional to 388,280.45, 535,825.93 and 218,514.58

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Solution

The fourth proportional to 388,280.45, 535,825.93 and 218,514.58 is: 301,549.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,280.45 : 535,825.93 = 218,514.58 : x
  2. Step 2: Convert to fraction form
    388,280.45/535,825.93 = 218,514.58/x
  3. Step 3: Cross multiply
    388,280.45x = 535,825.93 × 218,514.58
  4. Step 4: Simplify right side
    388,280.45x = 117,085,774,275.36
  5. Step 5: Solve for x
    x = 117,085,774,275.36/388,280.45
  6. Step 6: Final answer
    x = 301,549.50

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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.