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Finding the Fourth Proportional to 372,216.99, 513,712.71 and 208,890.93

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Solution

The fourth proportional to 372,216.99, 513,712.71 and 208,890.93 is: 288,299.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,216.99 : 513,712.71 = 208,890.93 : x
  2. Step 2: Convert to fraction form
    372,216.99/513,712.71 = 208,890.93/x
  3. Step 3: Cross multiply
    372,216.99x = 513,712.71 × 208,890.93
  4. Step 4: Simplify right side
    372,216.99x = 107,309,925,744.72
  5. Step 5: Solve for x
    x = 107,309,925,744.72/372,216.99
  6. Step 6: Final answer
    x = 288,299.38

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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.