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Finding the Fourth Proportional to 423,705.30, 584,571.06 and 239,918.76

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Solution

The fourth proportional to 423,705.30, 584,571.06 and 239,918.76 is: 331,007.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,705.30 : 584,571.06 = 239,918.76 : x
  2. Step 2: Convert to fraction form
    423,705.30/584,571.06 = 239,918.76/x
  3. Step 3: Cross multiply
    423,705.30x = 584,571.06 × 239,918.76
  4. Step 4: Simplify right side
    423,705.30x = 140,249,563,847.09
  5. Step 5: Solve for x
    x = 140,249,563,847.09/423,705.30
  6. Step 6: Final answer
    x = 331,007.34

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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.