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Finding the Fourth Proportional to 368,674.80, 553,012.20 and 256,117.20

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Solution

The fourth proportional to 368,674.80, 553,012.20 and 256,117.20 is: 384,175.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,674.80 : 553,012.20 = 256,117.20 : x
  2. Step 2: Convert to fraction form
    368,674.80/553,012.20 = 256,117.20/x
  3. Step 3: Cross multiply
    368,674.80x = 553,012.20 × 256,117.20
  4. Step 4: Simplify right side
    368,674.80x = 141,635,936,229.84
  5. Step 5: Solve for x
    x = 141,635,936,229.84/368,674.80
  6. Step 6: Final answer
    x = 384,175.80

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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.