Home / 430,211.16-645,302.16-163,962

Finding the Fourth Proportional to 430,211.16, 645,302.16 and 163,962

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Solution

The fourth proportional to 430,211.16, 645,302.16 and 163,962 is: 245,937.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,211.16 : 645,302.16 = 163,962 : x
  2. Step 2: Convert to fraction form
    430,211.16/645,302.16 = 163,962/x
  3. Step 3: Cross multiply
    430,211.16x = 645,302.16 × 163,962
  4. Step 4: Simplify right side
    430,211.16x = 105,805,032,757.92
  5. Step 5: Solve for x
    x = 105,805,032,757.92/430,211.16
  6. Step 6: Final answer
    x = 245,937.44

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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.