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Finding the Fourth Proportional to 525,390.84, 788,211.54 and 170,405.64

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Solution

The fourth proportional to 525,390.84, 788,211.54 and 170,405.64 is: 255,649.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,390.84 : 788,211.54 = 170,405.64 : x
  2. Step 2: Convert to fraction form
    525,390.84/788,211.54 = 170,405.64/x
  3. Step 3: Cross multiply
    525,390.84x = 788,211.54 × 170,405.64
  4. Step 4: Simplify right side
    525,390.84x = 134,315,691,929.09
  5. Step 5: Solve for x
    x = 134,315,691,929.09/525,390.84
  6. Step 6: Final answer
    x = 255,649.09

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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.