Home / 380,979.47-525,731.45-217,603.89

Finding the Fourth Proportional to 380,979.47, 525,731.45 and 217,603.89

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Solution

The fourth proportional to 380,979.47, 525,731.45 and 217,603.89 is: 300,281.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,979.47 : 525,731.45 = 217,603.89 : x
  2. Step 2: Convert to fraction form
    380,979.47/525,731.45 = 217,603.89/x
  3. Step 3: Cross multiply
    380,979.47x = 525,731.45 × 217,603.89
  4. Step 4: Simplify right side
    380,979.47x = 114,401,206,530.69
  5. Step 5: Solve for x
    x = 114,401,206,530.69/380,979.47
  6. Step 6: Final answer
    x = 300,281.82

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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.