Home / 430,043.03-645,071.43-163,818.71

Finding the Fourth Proportional to 430,043.03, 645,071.43 and 163,818.71

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Solution

The fourth proportional to 430,043.03, 645,071.43 and 163,818.71 is: 245,730.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,043.03 : 645,071.43 = 163,818.71 : x
  2. Step 2: Convert to fraction form
    430,043.03/645,071.43 = 163,818.71/x
  3. Step 3: Cross multiply
    430,043.03x = 645,071.43 × 163,818.71
  4. Step 4: Simplify right side
    430,043.03x = 105,674,769,520.46
  5. Step 5: Solve for x
    x = 105,674,769,520.46/430,043.03
  6. Step 6: Final answer
    x = 245,730.69

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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.