Home / 262,006.20-392,750.10-128,777.40

Finding the Fourth Proportional to 262,006.20, 392,750.10 and 128,777.40

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Solution

The fourth proportional to 262,006.20, 392,750.10 and 128,777.40 is: 193,038.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,006.20 : 392,750.10 = 128,777.40 : x
  2. Step 2: Convert to fraction form
    262,006.20/392,750.10 = 128,777.40/x
  3. Step 3: Cross multiply
    262,006.20x = 392,750.10 × 128,777.40
  4. Step 4: Simplify right side
    262,006.20x = 50,577,336,727.74
  5. Step 5: Solve for x
    x = 50,577,336,727.74/262,006.20
  6. Step 6: Final answer
    x = 193,038.70

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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.