Home / 430,085.72-645,055.76-130,494.04

Finding the Fourth Proportional to 430,085.72, 645,055.76 and 130,494.04

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Solution

The fourth proportional to 430,085.72, 645,055.76 and 130,494.04 is: 195,718.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,085.72 : 645,055.76 = 130,494.04 : x
  2. Step 2: Convert to fraction form
    430,085.72/645,055.76 = 130,494.04/x
  3. Step 3: Cross multiply
    430,085.72x = 645,055.76 × 130,494.04
  4. Step 4: Simplify right side
    430,085.72x = 84,175,932,147.67
  5. Step 5: Solve for x
    x = 84,175,932,147.67/430,085.72
  6. Step 6: Final answer
    x = 195,718.97

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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.