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Finding the Fourth Proportional to 388,665.16, 536,492.28 and 227,572

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Solution

The fourth proportional to 388,665.16, 536,492.28 and 227,572 is: 314,128.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,665.16 : 536,492.28 = 227,572 : x
  2. Step 2: Convert to fraction form
    388,665.16/536,492.28 = 227,572/x
  3. Step 3: Cross multiply
    388,665.16x = 536,492.28 × 227,572
  4. Step 4: Simplify right side
    388,665.16x = 122,090,621,144.16
  5. Step 5: Solve for x
    x = 122,090,621,144.16/388,665.16
  6. Step 6: Final answer
    x = 314,128.03

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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.