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Finding the Fourth Proportional to 543,210.90, 814,812.30 and 164,130.90

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Solution

The fourth proportional to 543,210.90, 814,812.30 and 164,130.90 is: 246,195.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,210.90 : 814,812.30 = 164,130.90 : x
  2. Step 2: Convert to fraction form
    543,210.90/814,812.30 = 164,130.90/x
  3. Step 3: Cross multiply
    543,210.90x = 814,812.30 × 164,130.90
  4. Step 4: Simplify right side
    543,210.90x = 133,735,876,130.07
  5. Step 5: Solve for x
    x = 133,735,876,130.07/543,210.90
  6. Step 6: Final answer
    x = 246,195.13

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1.5x scale

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.