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Finding the Fourth Proportional to 210,224.08, 315,434.54 and 91,880.06

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Solution

The fourth proportional to 210,224.08, 315,434.54 and 91,880.06 is: 137,863.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,224.08 : 315,434.54 = 91,880.06 : x
  2. Step 2: Convert to fraction form
    210,224.08/315,434.54 = 91,880.06/x
  3. Step 3: Cross multiply
    210,224.08x = 315,434.54 × 91,880.06
  4. Step 4: Simplify right side
    210,224.08x = 28,982,144,461.27
  5. Step 5: Solve for x
    x = 28,982,144,461.27/210,224.08
  6. Step 6: Final answer
    x = 137,863.11

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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.