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Finding the Fourth Proportional to 421,956.74, 582,210.38 and 249,928.54

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Solution

The fourth proportional to 421,956.74, 582,210.38 and 249,928.54 is: 344,848.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,956.74 : 582,210.38 = 249,928.54 : x
  2. Step 2: Convert to fraction form
    421,956.74/582,210.38 = 249,928.54/x
  3. Step 3: Cross multiply
    421,956.74x = 582,210.38 × 249,928.54
  4. Step 4: Simplify right side
    421,956.74x = 145,510,989,415.54
  5. Step 5: Solve for x
    x = 145,510,989,415.54/421,956.74
  6. Step 6: Final answer
    x = 344,848.12

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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.