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Finding the Fourth Proportional to 451,205.51, 622,946.72 and 290,340.11

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Solution

The fourth proportional to 451,205.51, 622,946.72 and 290,340.11 is: 400,851.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,205.51 : 622,946.72 = 290,340.11 : x
  2. Step 2: Convert to fraction form
    451,205.51/622,946.72 = 290,340.11/x
  3. Step 3: Cross multiply
    451,205.51x = 622,946.72 × 290,340.11
  4. Step 4: Simplify right side
    451,205.51x = 180,866,421,492.16
  5. Step 5: Solve for x
    x = 180,866,421,492.16/451,205.51
  6. Step 6: Final answer
    x = 400,851.54

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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.