Home / 257,260.32-355,031.91-155,284.16

Finding the Fourth Proportional to 257,260.32, 355,031.91 and 155,284.16

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Solution

The fourth proportional to 257,260.32, 355,031.91 and 155,284.16 is: 214,299.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,260.32 : 355,031.91 = 155,284.16 : x
  2. Step 2: Convert to fraction form
    257,260.32/355,031.91 = 155,284.16/x
  3. Step 3: Cross multiply
    257,260.32x = 355,031.91 × 155,284.16
  4. Step 4: Simplify right side
    257,260.32x = 55,130,831,917.55
  5. Step 5: Solve for x
    x = 55,130,831,917.55/257,260.32
  6. Step 6: Final answer
    x = 214,299.79

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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.