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Finding the Fourth Proportional to 341,578.71, 512,386.74 and 141,919.28

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Solution

The fourth proportional to 341,578.71, 512,386.74 and 141,919.28 is: 212,886.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,578.71 : 512,386.74 = 141,919.28 : x
  2. Step 2: Convert to fraction form
    341,578.71/512,386.74 = 141,919.28/x
  3. Step 3: Cross multiply
    341,578.71x = 512,386.74 × 141,919.28
  4. Step 4: Simplify right side
    341,578.71x = 72,717,554,660.41
  5. Step 5: Solve for x
    x = 72,717,554,660.41/341,578.71
  6. Step 6: Final answer
    x = 212,886.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.