Home / 388,616.03-536,282.04-216,533.30

Finding the Fourth Proportional to 388,616.03, 536,282.04 and 216,533.30

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Solution

The fourth proportional to 388,616.03, 536,282.04 and 216,533.30 is: 298,811.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,616.03 : 536,282.04 = 216,533.30 : x
  2. Step 2: Convert to fraction form
    388,616.03/536,282.04 = 216,533.30/x
  3. Step 3: Cross multiply
    388,616.03x = 536,282.04 × 216,533.30
  4. Step 4: Simplify right side
    388,616.03x = 116,122,919,851.93
  5. Step 5: Solve for x
    x = 116,122,919,851.93/388,616.03
  6. Step 6: Final answer
    x = 298,811.45

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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.