Home / 388,134.36-535,582.08-218,364.84

Finding the Fourth Proportional to 388,134.36, 535,582.08 and 218,364.84

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Solution

The fourth proportional to 388,134.36, 535,582.08 and 218,364.84 is: 301,319.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,134.36 : 535,582.08 = 218,364.84 : x
  2. Step 2: Convert to fraction form
    388,134.36/535,582.08 = 218,364.84/x
  3. Step 3: Cross multiply
    388,134.36x = 535,582.08 × 218,364.84
  4. Step 4: Simplify right side
    388,134.36x = 116,952,295,206.07
  5. Step 5: Solve for x
    x = 116,952,295,206.07/388,134.36
  6. Step 6: Final answer
    x = 301,319.10

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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.