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Finding the Fourth Proportional to 388,801.56, 536,543.76 and 219,090.36

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Solution

The fourth proportional to 388,801.56, 536,543.76 and 219,090.36 is: 302,343.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,801.56 : 536,543.76 = 219,090.36 : x
  2. Step 2: Convert to fraction form
    388,801.56/536,543.76 = 219,090.36/x
  3. Step 3: Cross multiply
    388,801.56x = 536,543.76 × 219,090.36
  4. Step 4: Simplify right side
    388,801.56x = 117,551,565,534.15
  5. Step 5: Solve for x
    x = 117,551,565,534.15/388,801.56
  6. Step 6: Final answer
    x = 302,343.35

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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.