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Finding the Fourth Proportional to 540,706, 811,236.70 and 221,126.70

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Solution

The fourth proportional to 540,706, 811,236.70 and 221,126.70 is: 331,762.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,706 : 811,236.70 = 221,126.70 : x
  2. Step 2: Convert to fraction form
    540,706/811,236.70 = 221,126.70/x
  3. Step 3: Cross multiply
    540,706x = 811,236.70 × 221,126.70
  4. Step 4: Simplify right side
    540,706x = 179,386,094,389.89
  5. Step 5: Solve for x
    x = 179,386,094,389.89/540,706
  6. Step 6: Final answer
    x = 331,762.72

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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.