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Finding the Fourth Proportional to 402,633.45, 555,635.16 and 230,554.08

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Solution

The fourth proportional to 402,633.45, 555,635.16 and 230,554.08 is: 318,165.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,633.45 : 555,635.16 = 230,554.08 : x
  2. Step 2: Convert to fraction form
    402,633.45/555,635.16 = 230,554.08/x
  3. Step 3: Cross multiply
    402,633.45x = 555,635.16 × 230,554.08
  4. Step 4: Simplify right side
    402,633.45x = 128,103,953,129.45
  5. Step 5: Solve for x
    x = 128,103,953,129.45/402,633.45
  6. Step 6: Final answer
    x = 318,165.20

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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.