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Finding the Fourth Proportional to 262,001.70, 392,743.35 and 128,772.90

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Solution

The fourth proportional to 262,001.70, 392,743.35 and 128,772.90 is: 193,031.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,001.70 : 392,743.35 = 128,772.90 : x
  2. Step 2: Convert to fraction form
    262,001.70/392,743.35 = 128,772.90/x
  3. Step 3: Cross multiply
    262,001.70x = 392,743.35 × 128,772.90
  4. Step 4: Simplify right side
    262,001.70x = 50,574,700,135.22
  5. Step 5: Solve for x
    x = 50,574,700,135.22/262,001.70
  6. Step 6: Final answer
    x = 193,031.95

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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.