Home / 355,402.89-533,197.80-127,721.50

Finding the Fourth Proportional to 355,402.89, 533,197.80 and 127,721.50

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Solution

The fourth proportional to 355,402.89, 533,197.80 and 127,721.50 is: 191,615.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,402.89 : 533,197.80 = 127,721.50 : x
  2. Step 2: Convert to fraction form
    355,402.89/533,197.80 = 127,721.50/x
  3. Step 3: Cross multiply
    355,402.89x = 533,197.80 × 127,721.50
  4. Step 4: Simplify right side
    355,402.89x = 68,100,821,479.71
  5. Step 5: Solve for x
    x = 68,100,821,479.71/355,402.89
  6. Step 6: Final answer
    x = 191,615.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.