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Finding the Fourth Proportional to 610,858.60, 916,725.30 and 256,127.20

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Solution

The fourth proportional to 610,858.60, 916,725.30 and 256,127.20 is: 384,374.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,858.60 : 916,725.30 = 256,127.20 : x
  2. Step 2: Convert to fraction form
    610,858.60/916,725.30 = 256,127.20/x
  3. Step 3: Cross multiply
    610,858.60x = 916,725.30 × 256,127.20
  4. Step 4: Simplify right side
    610,858.60x = 234,798,284,258.16
  5. Step 5: Solve for x
    x = 234,798,284,258.16/610,858.60
  6. Step 6: Final answer
    x = 384,374.20

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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.