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Finding the Fourth Proportional to 341,724.40, 513,007.80 and 215,364.40

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Solution

The fourth proportional to 341,724.40, 513,007.80 and 215,364.40 is: 323,312.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,724.40 : 513,007.80 = 215,364.40 : x
  2. Step 2: Convert to fraction form
    341,724.40/513,007.80 = 215,364.40/x
  3. Step 3: Cross multiply
    341,724.40x = 513,007.80 × 215,364.40
  4. Step 4: Simplify right side
    341,724.40x = 110,483,617,042.32
  5. Step 5: Solve for x
    x = 110,483,617,042.32/341,724.40
  6. Step 6: Final answer
    x = 323,312.05

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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.