Home / 282,501.12-389,853.36-155,175.60

Finding the Fourth Proportional to 282,501.12, 389,853.36 and 155,175.60

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Solution

The fourth proportional to 282,501.12, 389,853.36 and 155,175.60 is: 214,143.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,501.12 : 389,853.36 = 155,175.60 : x
  2. Step 2: Convert to fraction form
    282,501.12/389,853.36 = 155,175.60/x
  3. Step 3: Cross multiply
    282,501.12x = 389,853.36 × 155,175.60
  4. Step 4: Simplify right side
    282,501.12x = 60,495,729,050.02
  5. Step 5: Solve for x
    x = 60,495,729,050.02/282,501.12
  6. Step 6: Final answer
    x = 214,143.32

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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.