Home / 262,001.20-392,742.60-128,772.40

Finding the Fourth Proportional to 262,001.20, 392,742.60 and 128,772.40

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Solution

The fourth proportional to 262,001.20, 392,742.60 and 128,772.40 is: 193,031.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,001.20 : 392,742.60 = 128,772.40 : x
  2. Step 2: Convert to fraction form
    262,001.20/392,742.60 = 128,772.40/x
  3. Step 3: Cross multiply
    262,001.20x = 392,742.60 × 128,772.40
  4. Step 4: Simplify right side
    262,001.20x = 50,574,407,184.24
  5. Step 5: Solve for x
    x = 50,574,407,184.24/262,001.20
  6. Step 6: Final answer
    x = 193,031.20

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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.