Home / 429,922.48-644,881.80-163,620.40

Finding the Fourth Proportional to 429,922.48, 644,881.80 and 163,620.40

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Solution

The fourth proportional to 429,922.48, 644,881.80 and 163,620.40 is: 245,429.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,922.48 : 644,881.80 = 163,620.40 : x
  2. Step 2: Convert to fraction form
    429,922.48/644,881.80 = 163,620.40/x
  3. Step 3: Cross multiply
    429,922.48x = 644,881.80 × 163,620.40
  4. Step 4: Simplify right side
    429,922.48x = 105,515,818,068.72
  5. Step 5: Solve for x
    x = 105,515,818,068.72/429,922.48
  6. Step 6: Final answer
    x = 245,429.87

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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.