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Finding the Fourth Proportional to 404,427.40, 607,140.30 and 254,667.40

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Solution

The fourth proportional to 404,427.40, 607,140.30 and 254,667.40 is: 382,315.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,427.40 : 607,140.30 = 254,667.40 : x
  2. Step 2: Convert to fraction form
    404,427.40/607,140.30 = 254,667.40/x
  3. Step 3: Cross multiply
    404,427.40x = 607,140.30 × 254,667.40
  4. Step 4: Simplify right side
    404,427.40x = 154,618,841,636.22
  5. Step 5: Solve for x
    x = 154,618,841,636.22/404,427.40
  6. Step 6: Final answer
    x = 382,315.45

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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.