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Finding the Fourth Proportional to 298,559.12, 447,510.21 and 129,883.10

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Solution

The fourth proportional to 298,559.12, 447,510.21 and 129,883.10 is: 194,681.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,559.12 : 447,510.21 = 129,883.10 : x
  2. Step 2: Convert to fraction form
    298,559.12/447,510.21 = 129,883.10/x
  3. Step 3: Cross multiply
    298,559.12x = 447,510.21 × 129,883.10
  4. Step 4: Simplify right side
    298,559.12x = 58,124,013,356.45
  5. Step 5: Solve for x
    x = 58,124,013,356.45/298,559.12
  6. Step 6: Final answer
    x = 194,681.75

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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.