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Finding the Fourth Proportional to 262,062.40, 392,510.40 and 256,230.40

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Solution

The fourth proportional to 262,062.40, 392,510.40 and 256,230.40 is: 383,775.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,062.40 : 392,510.40 = 256,230.40 : x
  2. Step 2: Convert to fraction form
    262,062.40/392,510.40 = 256,230.40/x
  3. Step 3: Cross multiply
    262,062.40x = 392,510.40 × 256,230.40
  4. Step 4: Simplify right side
    262,062.40x = 100,573,096,796.16
  5. Step 5: Solve for x
    x = 100,573,096,796.16/262,062.40
  6. Step 6: Final answer
    x = 383,775.38

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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.