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Finding the Fourth Proportional to 391,479.06, 586,798.81 and 256,492.16

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Solution

The fourth proportional to 391,479.06, 586,798.81 and 256,492.16 is: 384,463.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,479.06 : 586,798.81 = 256,492.16 : x
  2. Step 2: Convert to fraction form
    391,479.06/586,798.81 = 256,492.16/x
  3. Step 3: Cross multiply
    391,479.06x = 586,798.81 × 256,492.16
  4. Step 4: Simplify right side
    391,479.06x = 150,509,294,262.33
  5. Step 5: Solve for x
    x = 150,509,294,262.33/391,479.06
  6. Step 6: Final answer
    x = 384,463.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.