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Finding the Fourth Proportional to 404,876.40, 607,813.80 and 255,116.40

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Solution

The fourth proportional to 404,876.40, 607,813.80 and 255,116.40 is: 382,989.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,876.40 : 607,813.80 = 255,116.40 : x
  2. Step 2: Convert to fraction form
    404,876.40/607,813.80 = 255,116.40/x
  3. Step 3: Cross multiply
    404,876.40x = 607,813.80 × 255,116.40
  4. Step 4: Simplify right side
    404,876.40x = 155,063,268,526.32
  5. Step 5: Solve for x
    x = 155,063,268,526.32/404,876.40
  6. Step 6: Final answer
    x = 382,989.15

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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.