Home / 282,209.08-389,448.78-153,147.55

Finding the Fourth Proportional to 282,209.08, 389,448.78 and 153,147.55

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Solution

The fourth proportional to 282,209.08, 389,448.78 and 153,147.55 is: 211,343.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,209.08 : 389,448.78 = 153,147.55 : x
  2. Step 2: Convert to fraction form
    282,209.08/389,448.78 = 153,147.55/x
  3. Step 3: Cross multiply
    282,209.08x = 389,448.78 × 153,147.55
  4. Step 4: Simplify right side
    282,209.08x = 59,643,125,741.75
  5. Step 5: Solve for x
    x = 59,643,125,741.75/282,209.08
  6. Step 6: Final answer
    x = 211,343.76

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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.