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Finding the Fourth Proportional to 479,319.66, 718,979.73 and 163,779.66

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Solution

The fourth proportional to 479,319.66, 718,979.73 and 163,779.66 is: 245,669.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,319.66 : 718,979.73 = 163,779.66 : x
  2. Step 2: Convert to fraction form
    479,319.66/718,979.73 = 163,779.66/x
  3. Step 3: Cross multiply
    479,319.66x = 718,979.73 × 163,779.66
  4. Step 4: Simplify right side
    479,319.66x = 117,754,255,726.29
  5. Step 5: Solve for x
    x = 117,754,255,726.29/479,319.66
  6. Step 6: Final answer
    x = 245,669.57

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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.