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Finding the Fourth Proportional to 376,622.64, 564,883.68 and 139,933.20

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Solution

The fourth proportional to 376,622.64, 564,883.68 and 139,933.20 is: 209,881.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,622.64 : 564,883.68 = 139,933.20 : x
  2. Step 2: Convert to fraction form
    376,622.64/564,883.68 = 139,933.20/x
  3. Step 3: Cross multiply
    376,622.64x = 564,883.68 × 139,933.20
  4. Step 4: Simplify right side
    376,622.64x = 79,045,980,970.18
  5. Step 5: Solve for x
    x = 79,045,980,970.18/376,622.64
  6. Step 6: Final answer
    x = 209,881.12

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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.