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Finding the Fourth Proportional to 284,299.56, 390,271.95 and 281,642.76

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Solution

The fourth proportional to 284,299.56, 390,271.95 and 281,642.76 is: 386,624.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,299.56 : 390,271.95 = 281,642.76 : x
  2. Step 2: Convert to fraction form
    284,299.56/390,271.95 = 281,642.76/x
  3. Step 3: Cross multiply
    284,299.56x = 390,271.95 × 281,642.76
  4. Step 4: Simplify right side
    284,299.56x = 109,917,269,148.58
  5. Step 5: Solve for x
    x = 109,917,269,148.58/284,299.56
  6. Step 6: Final answer
    x = 386,624.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.