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Finding the Fourth Proportional to 561,315.06, 774,612.45 and 306,670.50

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Solution

The fourth proportional to 561,315.06, 774,612.45 and 306,670.50 is: 423,204.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,315.06 : 774,612.45 = 306,670.50 : x
  2. Step 2: Convert to fraction form
    561,315.06/774,612.45 = 306,670.50/x
  3. Step 3: Cross multiply
    561,315.06x = 774,612.45 × 306,670.50
  4. Step 4: Simplify right side
    561,315.06x = 237,550,787,347.73
  5. Step 5: Solve for x
    x = 237,550,787,347.73/561,315.06
  6. Step 6: Final answer
    x = 423,204.02

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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.