Home / 388,109.40-535,577.04-216,021.66

Finding the Fourth Proportional to 388,109.40, 535,577.04 and 216,021.66

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Solution

The fourth proportional to 388,109.40, 535,577.04 and 216,021.66 is: 298,102.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,109.40 : 535,577.04 = 216,021.66 : x
  2. Step 2: Convert to fraction form
    388,109.40/535,577.04 = 216,021.66/x
  3. Step 3: Cross multiply
    388,109.40x = 535,577.04 × 216,021.66
  4. Step 4: Simplify right side
    388,109.40x = 115,696,241,238.69
  5. Step 5: Solve for x
    x = 115,696,241,238.69/388,109.40
  6. Step 6: Final answer
    x = 298,102.14

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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.