Home / 388,072.20-535,510.80-218,273.52

Finding the Fourth Proportional to 388,072.20, 535,510.80 and 218,273.52

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Solution

The fourth proportional to 388,072.20, 535,510.80 and 218,273.52 is: 301,201.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,072.20 : 535,510.80 = 218,273.52 : x
  2. Step 2: Convert to fraction form
    388,072.20/535,510.80 = 218,273.52/x
  3. Step 3: Cross multiply
    388,072.20x = 535,510.80 × 218,273.52
  4. Step 4: Simplify right side
    388,072.20x = 116,887,827,314.02
  5. Step 5: Solve for x
    x = 116,887,827,314.02/388,072.20
  6. Step 6: Final answer
    x = 301,201.24

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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.