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Finding the Fourth Proportional to 258,767.40, 388,151.10 and 188,783.40

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Solution

The fourth proportional to 258,767.40, 388,151.10 and 188,783.40 is: 283,175.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,767.40 : 388,151.10 = 188,783.40 : x
  2. Step 2: Convert to fraction form
    258,767.40/388,151.10 = 188,783.40/x
  3. Step 3: Cross multiply
    258,767.40x = 388,151.10 × 188,783.40
  4. Step 4: Simplify right side
    258,767.40x = 73,276,484,371.74
  5. Step 5: Solve for x
    x = 73,276,484,371.74/258,767.40
  6. Step 6: Final answer
    x = 283,175.10

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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.