Home / 351,730.80-485,397.54-215,839.82

Finding the Fourth Proportional to 351,730.80, 485,397.54 and 215,839.82

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Solution

The fourth proportional to 351,730.80, 485,397.54 and 215,839.82 is: 297,864.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,730.80 : 485,397.54 = 215,839.82 : x
  2. Step 2: Convert to fraction form
    351,730.80/485,397.54 = 215,839.82/x
  3. Step 3: Cross multiply
    351,730.80x = 485,397.54 × 215,839.82
  4. Step 4: Simplify right side
    351,730.80x = 104,768,118,875.54
  5. Step 5: Solve for x
    x = 104,768,118,875.54/351,730.80
  6. Step 6: Final answer
    x = 297,864.50

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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.