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Finding the Fourth Proportional to 282,349.54, 389,642.97 and 155,033.20

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Solution

The fourth proportional to 282,349.54, 389,642.97 and 155,033.20 is: 213,946.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,349.54 : 389,642.97 = 155,033.20 : x
  2. Step 2: Convert to fraction form
    282,349.54/389,642.97 = 155,033.20/x
  3. Step 3: Cross multiply
    282,349.54x = 389,642.97 × 155,033.20
  4. Step 4: Simplify right side
    282,349.54x = 60,407,596,496.60
  5. Step 5: Solve for x
    x = 60,407,596,496.60/282,349.54
  6. Step 6: Final answer
    x = 213,946.15

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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.