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Finding the Fourth Proportional to 456,531.80, 684,236.84 and 256,431.56

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Solution

The fourth proportional to 456,531.80, 684,236.84 and 256,431.56 is: 384,332.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,531.80 : 684,236.84 = 256,431.56 : x
  2. Step 2: Convert to fraction form
    456,531.80/684,236.84 = 256,431.56/x
  3. Step 3: Cross multiply
    456,531.80x = 684,236.84 × 256,431.56
  4. Step 4: Simplify right side
    456,531.80x = 175,459,920,290.67
  5. Step 5: Solve for x
    x = 175,459,920,290.67/456,531.80
  6. Step 6: Final answer
    x = 384,332.31

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1.5x scale

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.