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Finding the Fourth Proportional to 351,492.78, 527,130 and 126,823.98

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Solution

The fourth proportional to 351,492.78, 527,130 and 126,823.98 is: 190,196.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,492.78 : 527,130 = 126,823.98 : x
  2. Step 2: Convert to fraction form
    351,492.78/527,130 = 126,823.98/x
  3. Step 3: Cross multiply
    351,492.78x = 527,130 × 126,823.98
  4. Step 4: Simplify right side
    351,492.78x = 66,852,724,577.40
  5. Step 5: Solve for x
    x = 66,852,724,577.40/351,492.78
  6. Step 6: Final answer
    x = 190,196.58

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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.