Home / 430,234.16-645,336.66-163,985

Finding the Fourth Proportional to 430,234.16, 645,336.66 and 163,985

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Solution

The fourth proportional to 430,234.16, 645,336.66 and 163,985 is: 245,971.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,234.16 : 645,336.66 = 163,985 : x
  2. Step 2: Convert to fraction form
    430,234.16/645,336.66 = 163,985/x
  3. Step 3: Cross multiply
    430,234.16x = 645,336.66 × 163,985
  4. Step 4: Simplify right side
    430,234.16x = 105,825,532,190.10
  5. Step 5: Solve for x
    x = 105,825,532,190.10/430,234.16
  6. Step 6: Final answer
    x = 245,971.94

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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.