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Finding the Fourth Proportional to 404,903.40, 607,854.30 and 255,143.40

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Solution

The fourth proportional to 404,903.40, 607,854.30 and 255,143.40 is: 383,029.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,903.40 : 607,854.30 = 255,143.40 : x
  2. Step 2: Convert to fraction form
    404,903.40/607,854.30 = 255,143.40/x
  3. Step 3: Cross multiply
    404,903.40x = 607,854.30 × 255,143.40
  4. Step 4: Simplify right side
    404,903.40x = 155,090,012,806.62
  5. Step 5: Solve for x
    x = 155,090,012,806.62/404,903.40
  6. Step 6: Final answer
    x = 383,029.66

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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.