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Finding the Fourth Proportional to 379,776.60, 524,107.80 and 210,010.50

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Solution

The fourth proportional to 379,776.60, 524,107.80 and 210,010.50 is: 289,823.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,776.60 : 524,107.80 = 210,010.50 : x
  2. Step 2: Convert to fraction form
    379,776.60/524,107.80 = 210,010.50/x
  3. Step 3: Cross multiply
    379,776.60x = 524,107.80 × 210,010.50
  4. Step 4: Simplify right side
    379,776.60x = 110,068,141,131.90
  5. Step 5: Solve for x
    x = 110,068,141,131.90/379,776.60
  6. Step 6: Final answer
    x = 289,823.39

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1.5x scale

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.