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Finding the Fourth Proportional to 404,881.40, 607,821.30 and 255,121.40

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Solution

The fourth proportional to 404,881.40, 607,821.30 and 255,121.40 is: 382,996.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,881.40 : 607,821.30 = 255,121.40 : x
  2. Step 2: Convert to fraction form
    404,881.40/607,821.30 = 255,121.40/x
  3. Step 3: Cross multiply
    404,881.40x = 607,821.30 × 255,121.40
  4. Step 4: Simplify right side
    404,881.40x = 155,068,221,005.82
  5. Step 5: Solve for x
    x = 155,068,221,005.82/404,881.40
  6. Step 6: Final answer
    x = 382,996.65

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1.5x scale

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.