Home / 235,681.35-325,247.10-128,258.31

Finding the Fourth Proportional to 235,681.35, 325,247.10 and 128,258.31

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Solution

The fourth proportional to 235,681.35, 325,247.10 and 128,258.31 is: 177,000.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,681.35 : 325,247.10 = 128,258.31 : x
  2. Step 2: Convert to fraction form
    235,681.35/325,247.10 = 128,258.31/x
  3. Step 3: Cross multiply
    235,681.35x = 325,247.10 × 128,258.31
  4. Step 4: Simplify right side
    235,681.35x = 41,715,643,378.40
  5. Step 5: Solve for x
    x = 41,715,643,378.40/235,681.35
  6. Step 6: Final answer
    x = 177,000.19

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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.