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Finding the Fourth Proportional to 420,283.29, 580,007.22 and 239,011.77

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Solution

The fourth proportional to 420,283.29, 580,007.22 and 239,011.77 is: 329,845.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,283.29 : 580,007.22 = 239,011.77 : x
  2. Step 2: Convert to fraction form
    420,283.29/580,007.22 = 239,011.77/x
  3. Step 3: Cross multiply
    420,283.29x = 580,007.22 × 239,011.77
  4. Step 4: Simplify right side
    420,283.29x = 138,628,552,264.98
  5. Step 5: Solve for x
    x = 138,628,552,264.98/420,283.29
  6. Step 6: Final answer
    x = 329,845.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.