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Finding the Fourth Proportional to 388,763.36, 536,483.28 and 218,987.36

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Solution

The fourth proportional to 388,763.36, 536,483.28 and 218,987.36 is: 302,196.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,763.36 : 536,483.28 = 218,987.36 : x
  2. Step 2: Convert to fraction form
    388,763.36/536,483.28 = 218,987.36/x
  3. Step 3: Cross multiply
    388,763.36x = 536,483.28 × 218,987.36
  4. Step 4: Simplify right side
    388,763.36x = 117,483,057,171.34
  5. Step 5: Solve for x
    x = 117,483,057,171.34/388,763.36
  6. Step 6: Final answer
    x = 302,196.84

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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.