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Finding the Fourth Proportional to 610,851.60, 916,714.80 and 256,120.20

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Solution

The fourth proportional to 610,851.60, 916,714.80 and 256,120.20 is: 384,363.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,851.60 : 916,714.80 = 256,120.20 : x
  2. Step 2: Convert to fraction form
    610,851.60/916,714.80 = 256,120.20/x
  3. Step 3: Cross multiply
    610,851.60x = 916,714.80 × 256,120.20
  4. Step 4: Simplify right side
    610,851.60x = 234,789,177,918.96
  5. Step 5: Solve for x
    x = 234,789,177,918.96/610,851.60
  6. Step 6: Final answer
    x = 384,363.69

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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.