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Finding the Fourth Proportional to 212,901.71, 293,461.70 and 155,449.94

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Solution

The fourth proportional to 212,901.71, 293,461.70 and 155,449.94 is: 214,270.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,901.71 : 293,461.70 = 155,449.94 : x
  2. Step 2: Convert to fraction form
    212,901.71/293,461.70 = 155,449.94/x
  3. Step 3: Cross multiply
    212,901.71x = 293,461.70 × 155,449.94
  4. Step 4: Simplify right side
    212,901.71x = 45,618,601,412.74
  5. Step 5: Solve for x
    x = 45,618,601,412.74/212,901.71
  6. Step 6: Final answer
    x = 214,270.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.