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Finding the Fourth Proportional to 383,158.68, 528,758.99 and 213,392.81

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Solution

The fourth proportional to 383,158.68, 528,758.99 and 213,392.81 is: 294,482.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,158.68 : 528,758.99 = 213,392.81 : x
  2. Step 2: Convert to fraction form
    383,158.68/528,758.99 = 213,392.81/x
  3. Step 3: Cross multiply
    383,158.68x = 528,758.99 × 213,392.81
  4. Step 4: Simplify right side
    383,158.68x = 112,833,366,688.86
  5. Step 5: Solve for x
    x = 112,833,366,688.86/383,158.68
  6. Step 6: Final answer
    x = 294,482.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.