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Finding the Fourth Proportional to 371,618.40, 557,427.60 and 313,881.60

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Solution

The fourth proportional to 371,618.40, 557,427.60 and 313,881.60 is: 470,822.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,618.40 : 557,427.60 = 313,881.60 : x
  2. Step 2: Convert to fraction form
    371,618.40/557,427.60 = 313,881.60/x
  3. Step 3: Cross multiply
    371,618.40x = 557,427.60 × 313,881.60
  4. Step 4: Simplify right side
    371,618.40x = 174,966,266,972.16
  5. Step 5: Solve for x
    x = 174,966,266,972.16/371,618.40
  6. Step 6: Final answer
    x = 470,822.40

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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.