Home / 427,072.50-640,995.12-227,561.40

Finding the Fourth Proportional to 427,072.50, 640,995.12 and 227,561.40

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Solution

The fourth proportional to 427,072.50, 640,995.12 and 227,561.40 is: 341,547.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,072.50 : 640,995.12 = 227,561.40 : x
  2. Step 2: Convert to fraction form
    427,072.50/640,995.12 = 227,561.40/x
  3. Step 3: Cross multiply
    427,072.50x = 640,995.12 × 227,561.40
  4. Step 4: Simplify right side
    427,072.50x = 145,865,746,900.37
  5. Step 5: Solve for x
    x = 145,865,746,900.37/427,072.50
  6. Step 6: Final answer
    x = 341,547.97

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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.