Home / 380,469,128.47-525,038,859.54-221,689,356.84

Finding the Fourth Proportional to 380,469,128.47, 525,038,859.54 and 221,689,356.84

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Solution

The fourth proportional to 380,469,128.47, 525,038,859.54 and 221,689,356.84 is: 305,926,337.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,469,128.47 : 525,038,859.54 = 221,689,356.84 : x
  2. Step 2: Convert to fraction form
    380,469,128.47/525,038,859.54 = 221,689,356.84/x
  3. Step 3: Cross multiply
    380,469,128.47x = 525,038,859.54 × 221,689,356.84
  4. Step 4: Simplify right side
    380,469,128.47x = 116,395,527,087,429,712
  5. Step 5: Solve for x
    x = 116,395,527,087,429,712/380,469,128.47
  6. Step 6: Final answer
    x = 305,926,337.72

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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.