Home / 430,031.23-645,071.46-130,521.58

Finding the Fourth Proportional to 430,031.23, 645,071.46 and 130,521.58

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Solution

The fourth proportional to 430,031.23, 645,071.46 and 130,521.58 is: 195,789.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,031.23 : 645,071.46 = 130,521.58 : x
  2. Step 2: Convert to fraction form
    430,031.23/645,071.46 = 130,521.58/x
  3. Step 3: Cross multiply
    430,031.23x = 645,071.46 × 130,521.58
  4. Step 4: Simplify right side
    430,031.23x = 84,195,747,698.50
  5. Step 5: Solve for x
    x = 84,195,747,698.50/430,031.23
  6. Step 6: Final answer
    x = 195,789.84

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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.