Home / 388,127.70-535,587.12-218,329.02

Finding the Fourth Proportional to 388,127.70, 535,587.12 and 218,329.02

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Solution

The fourth proportional to 388,127.70, 535,587.12 and 218,329.02 is: 301,277.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,127.70 : 535,587.12 = 218,329.02 : x
  2. Step 2: Convert to fraction form
    388,127.70/535,587.12 = 218,329.02/x
  3. Step 3: Cross multiply
    388,127.70x = 535,587.12 × 218,329.02
  4. Step 4: Simplify right side
    388,127.70x = 116,934,211,034.22
  5. Step 5: Solve for x
    x = 116,934,211,034.22/388,127.70
  6. Step 6: Final answer
    x = 301,277.67

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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.