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Finding the Fourth Proportional to 256,875.84, 354,489.66 and 143,698.68

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Solution

The fourth proportional to 256,875.84, 354,489.66 and 143,698.68 is: 198,304.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,875.84 : 354,489.66 = 143,698.68 : x
  2. Step 2: Convert to fraction form
    256,875.84/354,489.66 = 143,698.68/x
  3. Step 3: Cross multiply
    256,875.84x = 354,489.66 × 143,698.68
  4. Step 4: Simplify right side
    256,875.84x = 50,939,696,215.65
  5. Step 5: Solve for x
    x = 50,939,696,215.65/256,875.84
  6. Step 6: Final answer
    x = 198,304.74

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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.