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Finding the Fourth Proportional to 427,226, 640,882.88 and 161,210.40

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Solution

The fourth proportional to 427,226, 640,882.88 and 161,210.40 is: 241,832.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,226 : 640,882.88 = 161,210.40 : x
  2. Step 2: Convert to fraction form
    427,226/640,882.88 = 161,210.40/x
  3. Step 3: Cross multiply
    427,226x = 640,882.88 × 161,210.40
  4. Step 4: Simplify right side
    427,226x = 103,316,985,437.95
  5. Step 5: Solve for x
    x = 103,316,985,437.95/427,226
  6. Step 6: Final answer
    x = 241,832.16

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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.