Home / 430,225.43-645,339.36-130,708.49

Finding the Fourth Proportional to 430,225.43, 645,339.36 and 130,708.49

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Solution

The fourth proportional to 430,225.43, 645,339.36 and 130,708.49 is: 196,063.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,225.43 : 645,339.36 = 130,708.49 : x
  2. Step 2: Convert to fraction form
    430,225.43/645,339.36 = 130,708.49/x
  3. Step 3: Cross multiply
    430,225.43x = 645,339.36 × 130,708.49
  4. Step 4: Simplify right side
    430,225.43x = 84,351,335,386.67
  5. Step 5: Solve for x
    x = 84,351,335,386.67/430,225.43
  6. Step 6: Final answer
    x = 196,063.11

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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.