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Finding the Fourth Proportional to 388,798.05, 536,543.93 and 216,727.16

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Solution

The fourth proportional to 388,798.05, 536,543.93 and 216,727.16 is: 299,084.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,798.05 : 536,543.93 = 216,727.16 : x
  2. Step 2: Convert to fraction form
    388,798.05/536,543.93 = 216,727.16/x
  3. Step 3: Cross multiply
    388,798.05x = 536,543.93 × 216,727.16
  4. Step 4: Simplify right side
    388,798.05x = 116,283,640,023.24
  5. Step 5: Solve for x
    x = 116,283,640,023.24/388,798.05
  6. Step 6: Final answer
    x = 299,084.93

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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.