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Finding the Fourth Proportional to 210,418.02, 315,627.71 and 52,646.47

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Solution

The fourth proportional to 210,418.02, 315,627.71 and 52,646.47 is: 78,969.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,418.02 : 315,627.71 = 52,646.47 : x
  2. Step 2: Convert to fraction form
    210,418.02/315,627.71 = 52,646.47/x
  3. Step 3: Cross multiply
    210,418.02x = 315,627.71 × 52,646.47
  4. Step 4: Simplify right side
    210,418.02x = 16,616,683,713.38
  5. Step 5: Solve for x
    x = 16,616,683,713.38/210,418.02
  6. Step 6: Final answer
    x = 78,969.87

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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.