Home / 378,529.13-522,381.87-217,416.50

Finding the Fourth Proportional to 378,529.13, 522,381.87 and 217,416.50

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Solution

The fourth proportional to 378,529.13, 522,381.87 and 217,416.50 is: 300,041.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,529.13 : 522,381.87 = 217,416.50 : x
  2. Step 2: Convert to fraction form
    378,529.13/522,381.87 = 217,416.50/x
  3. Step 3: Cross multiply
    378,529.13x = 522,381.87 × 217,416.50
  4. Step 4: Simplify right side
    378,529.13x = 113,574,437,838.86
  5. Step 5: Solve for x
    x = 113,574,437,838.86/378,529.13
  6. Step 6: Final answer
    x = 300,041.47

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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.