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Finding the Fourth Proportional to 376,660.80, 564,926.40 and 139,881.60

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Solution

The fourth proportional to 376,660.80, 564,926.40 and 139,881.60 is: 209,798.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,660.80 : 564,926.40 = 139,881.60 : x
  2. Step 2: Convert to fraction form
    376,660.80/564,926.40 = 139,881.60/x
  3. Step 3: Cross multiply
    376,660.80x = 564,926.40 × 139,881.60
  4. Step 4: Simplify right side
    376,660.80x = 79,022,808,714.24
  5. Step 5: Solve for x
    x = 79,022,808,714.24/376,660.80
  6. Step 6: Final answer
    x = 209,798.34

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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.