Home / 485,439.72-727,587.52-218,888.16

Finding the Fourth Proportional to 485,439.72, 727,587.52 and 218,888.16

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Solution

The fourth proportional to 485,439.72, 727,587.52 and 218,888.16 is: 328,074.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,439.72 : 727,587.52 = 218,888.16 : x
  2. Step 2: Convert to fraction form
    485,439.72/727,587.52 = 218,888.16/x
  3. Step 3: Cross multiply
    485,439.72x = 727,587.52 × 218,888.16
  4. Step 4: Simplify right side
    485,439.72x = 159,260,293,491.76
  5. Step 5: Solve for x
    x = 159,260,293,491.76/485,439.72
  6. Step 6: Final answer
    x = 328,074.29

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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.