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Finding the Fourth Proportional to 219,699.60, 329,599.92 and 79,458.24

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Solution

The fourth proportional to 219,699.60, 329,599.92 and 79,458.24 is: 119,205.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,699.60 : 329,599.92 = 79,458.24 : x
  2. Step 2: Convert to fraction form
    219,699.60/329,599.92 = 79,458.24/x
  3. Step 3: Cross multiply
    219,699.60x = 329,599.92 × 79,458.24
  4. Step 4: Simplify right side
    219,699.60x = 26,189,429,547.34
  5. Step 5: Solve for x
    x = 26,189,429,547.34/219,699.60
  6. Step 6: Final answer
    x = 119,205.63

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1.5x scale

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.