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Finding the Fourth Proportional to 404,428.40, 607,141.80 and 254,668.40

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Solution

The fourth proportional to 404,428.40, 607,141.80 and 254,668.40 is: 382,316.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,428.40 : 607,141.80 = 254,668.40 : x
  2. Step 2: Convert to fraction form
    404,428.40/607,141.80 = 254,668.40/x
  3. Step 3: Cross multiply
    404,428.40x = 607,141.80 × 254,668.40
  4. Step 4: Simplify right side
    404,428.40x = 154,619,830,779.12
  5. Step 5: Solve for x
    x = 154,619,830,779.12/404,428.40
  6. Step 6: Final answer
    x = 382,316.95

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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.