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Finding the Fourth Proportional to 379,990.32, 524,367.48 and 207,904.56

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Solution

The fourth proportional to 379,990.32, 524,367.48 and 207,904.56 is: 286,897.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,990.32 : 524,367.48 = 207,904.56 : x
  2. Step 2: Convert to fraction form
    379,990.32/524,367.48 = 207,904.56/x
  3. Step 3: Cross multiply
    379,990.32x = 524,367.48 × 207,904.56
  4. Step 4: Simplify right side
    379,990.32x = 109,018,390,207.71
  5. Step 5: Solve for x
    x = 109,018,390,207.71/379,990.32
  6. Step 6: Final answer
    x = 286,897.81

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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.