Home / 257,328.16-355,112.88-144,153.28

Finding the Fourth Proportional to 257,328.16, 355,112.88 and 144,153.28

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Solution

The fourth proportional to 257,328.16, 355,112.88 and 144,153.28 is: 198,931.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,328.16 : 355,112.88 = 144,153.28 : x
  2. Step 2: Convert to fraction form
    257,328.16/355,112.88 = 144,153.28/x
  3. Step 3: Cross multiply
    257,328.16x = 355,112.88 × 144,153.28
  4. Step 4: Simplify right side
    257,328.16x = 51,190,686,422.25
  5. Step 5: Solve for x
    x = 51,190,686,422.25/257,328.16
  6. Step 6: Final answer
    x = 198,931.54

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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.