Home / 388,053.02-535,507.82-215,970.95

Finding the Fourth Proportional to 388,053.02, 535,507.82 and 215,970.95

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Solution

The fourth proportional to 388,053.02, 535,507.82 and 215,970.95 is: 298,036.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,053.02 : 535,507.82 = 215,970.95 : x
  2. Step 2: Convert to fraction form
    388,053.02/535,507.82 = 215,970.95/x
  3. Step 3: Cross multiply
    388,053.02x = 535,507.82 × 215,970.95
  4. Step 4: Simplify right side
    388,053.02x = 115,654,132,602.78
  5. Step 5: Solve for x
    x = 115,654,132,602.78/388,053.02
  6. Step 6: Final answer
    x = 298,036.93

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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.