Home / 485,437.72-727,584.52-218,886.16

Finding the Fourth Proportional to 485,437.72, 727,584.52 and 218,886.16

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Solution

The fourth proportional to 485,437.72, 727,584.52 and 218,886.16 is: 328,071.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,437.72 : 727,584.52 = 218,886.16 : x
  2. Step 2: Convert to fraction form
    485,437.72/727,584.52 = 218,886.16/x
  3. Step 3: Cross multiply
    485,437.72x = 727,584.52 × 218,886.16
  4. Step 4: Simplify right side
    485,437.72x = 159,258,181,658.24
  5. Step 5: Solve for x
    x = 159,258,181,658.24/485,437.72
  6. Step 6: Final answer
    x = 328,071.30

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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.