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Finding the Fourth Proportional to 368,520.80, 552,457.20 and 249,807.20

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Solution

The fourth proportional to 368,520.80, 552,457.20 and 249,807.20 is: 374,491.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,520.80 : 552,457.20 = 249,807.20 : x
  2. Step 2: Convert to fraction form
    368,520.80/552,457.20 = 249,807.20/x
  3. Step 3: Cross multiply
    368,520.80x = 552,457.20 × 249,807.20
  4. Step 4: Simplify right side
    368,520.80x = 138,007,786,251.84
  5. Step 5: Solve for x
    x = 138,007,786,251.84/368,520.80
  6. Step 6: Final answer
    x = 374,491.17

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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.