Home / 282,661.12-390,064.48-155,336.80

Finding the Fourth Proportional to 282,661.12, 390,064.48 and 155,336.80

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Solution

The fourth proportional to 282,661.12, 390,064.48 and 155,336.80 is: 214,360.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,661.12 : 390,064.48 = 155,336.80 : x
  2. Step 2: Convert to fraction form
    282,661.12/390,064.48 = 155,336.80/x
  3. Step 3: Cross multiply
    282,661.12x = 390,064.48 × 155,336.80
  4. Step 4: Simplify right side
    282,661.12x = 60,591,368,116.86
  5. Step 5: Solve for x
    x = 60,591,368,116.86/282,661.12
  6. Step 6: Final answer
    x = 214,360.46

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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.