Home / 290,265.40-434,822.10-255,628.60

Finding the Fourth Proportional to 290,265.40, 434,822.10 and 255,628.60

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Solution

The fourth proportional to 290,265.40, 434,822.10 and 255,628.60 is: 382,935.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,265.40 : 434,822.10 = 255,628.60 : x
  2. Step 2: Convert to fraction form
    290,265.40/434,822.10 = 255,628.60/x
  3. Step 3: Cross multiply
    290,265.40x = 434,822.10 × 255,628.60
  4. Step 4: Simplify right side
    290,265.40x = 111,152,964,672.06
  5. Step 5: Solve for x
    x = 111,152,964,672.06/290,265.40
  6. Step 6: Final answer
    x = 382,935.63

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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.