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Finding the Fourth Proportional to 376,457.60, 564,686.40 and 127,139.60

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Solution

The fourth proportional to 376,457.60, 564,686.40 and 127,139.60 is: 190,709.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,457.60 : 564,686.40 = 127,139.60 : x
  2. Step 2: Convert to fraction form
    376,457.60/564,686.40 = 127,139.60/x
  3. Step 3: Cross multiply
    376,457.60x = 564,686.40 × 127,139.60
  4. Step 4: Simplify right side
    376,457.60x = 71,794,003,021.44
  5. Step 5: Solve for x
    x = 71,794,003,021.44/376,457.60
  6. Step 6: Final answer
    x = 190,709.40

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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.