Home / 485,931.51-728,914.38-130,954.08

Finding the Fourth Proportional to 485,931.51, 728,914.38 and 130,954.08

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Solution

The fourth proportional to 485,931.51, 728,914.38 and 130,954.08 is: 196,435.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,931.51 : 728,914.38 = 130,954.08 : x
  2. Step 2: Convert to fraction form
    485,931.51/728,914.38 = 130,954.08/x
  3. Step 3: Cross multiply
    485,931.51x = 728,914.38 × 130,954.08
  4. Step 4: Simplify right side
    485,931.51x = 95,454,312,031.67
  5. Step 5: Solve for x
    x = 95,454,312,031.67/485,931.51
  6. Step 6: Final answer
    x = 196,435.73

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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.