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Finding the Fourth Proportional to 240,358.10, 360,427.80 and 128,009.48

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Solution

The fourth proportional to 240,358.10, 360,427.80 and 128,009.48 is: 191,955.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,358.10 : 360,427.80 = 128,009.48 : x
  2. Step 2: Convert to fraction form
    240,358.10/360,427.80 = 128,009.48/x
  3. Step 3: Cross multiply
    240,358.10x = 360,427.80 × 128,009.48
  4. Step 4: Simplify right side
    240,358.10x = 46,138,175,255.54
  5. Step 5: Solve for x
    x = 46,138,175,255.54/240,358.10
  6. Step 6: Final answer
    x = 191,955.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.