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Finding the Fourth Proportional to 547,214.40, 820,130.40 and 266,126.40

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Solution

The fourth proportional to 547,214.40, 820,130.40 and 266,126.40 is: 398,853.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,214.40 : 820,130.40 = 266,126.40 : x
  2. Step 2: Convert to fraction form
    547,214.40/820,130.40 = 266,126.40/x
  3. Step 3: Cross multiply
    547,214.40x = 820,130.40 × 266,126.40
  4. Step 4: Simplify right side
    547,214.40x = 218,258,350,882.56
  5. Step 5: Solve for x
    x = 218,258,350,882.56/547,214.40
  6. Step 6: Final answer
    x = 398,853.45

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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.