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Finding the Fourth Proportional to 341,929.40, 513,315.30 and 215,569.40

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Solution

The fourth proportional to 341,929.40, 513,315.30 and 215,569.40 is: 323,619.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,929.40 : 513,315.30 = 215,569.40 : x
  2. Step 2: Convert to fraction form
    341,929.40/513,315.30 = 215,569.40/x
  3. Step 3: Cross multiply
    341,929.40x = 513,315.30 × 215,569.40
  4. Step 4: Simplify right side
    341,929.40x = 110,655,071,231.82
  5. Step 5: Solve for x
    x = 110,655,071,231.82/341,929.40
  6. Step 6: Final answer
    x = 323,619.65

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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.