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Finding the Fourth Proportional to 379,818.48, 524,140.56 and 210,048.96

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Solution

The fourth proportional to 379,818.48, 524,140.56 and 210,048.96 is: 289,862.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,818.48 : 524,140.56 = 210,048.96 : x
  2. Step 2: Convert to fraction form
    379,818.48/524,140.56 = 210,048.96/x
  3. Step 3: Cross multiply
    379,818.48x = 524,140.56 × 210,048.96
  4. Step 4: Simplify right side
    379,818.48x = 110,095,179,521.82
  5. Step 5: Solve for x
    x = 110,095,179,521.82/379,818.48
  6. Step 6: Final answer
    x = 289,862.62

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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.