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Finding the Fourth Proportional to 402,635.64, 555,651.48 and 230,584.32

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Solution

The fourth proportional to 402,635.64, 555,651.48 and 230,584.32 is: 318,214.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,635.64 : 555,651.48 = 230,584.32 : x
  2. Step 2: Convert to fraction form
    402,635.64/555,651.48 = 230,584.32/x
  3. Step 3: Cross multiply
    402,635.64x = 555,651.48 × 230,584.32
  4. Step 4: Simplify right side
    402,635.64x = 128,124,518,672.79
  5. Step 5: Solve for x
    x = 128,124,518,672.79/402,635.64
  6. Step 6: Final answer
    x = 318,214.55

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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.