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Finding the Fourth Proportional to 388,465.80, 536,080.86 and 218,701.14

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Solution

The fourth proportional to 388,465.80, 536,080.86 and 218,701.14 is: 301,806.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,465.80 : 536,080.86 = 218,701.14 : x
  2. Step 2: Convert to fraction form
    388,465.80/536,080.86 = 218,701.14/x
  3. Step 3: Cross multiply
    388,465.80x = 536,080.86 × 218,701.14
  4. Step 4: Simplify right side
    388,465.80x = 117,241,495,214.18
  5. Step 5: Solve for x
    x = 117,241,495,214.18/388,465.80
  6. Step 6: Final answer
    x = 301,806.48

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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.