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Finding the Fourth Proportional to 216,909.78, 299,333.40 and 124,995.30

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Solution

The fourth proportional to 216,909.78, 299,333.40 and 124,995.30 is: 172,492.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,909.78 : 299,333.40 = 124,995.30 : x
  2. Step 2: Convert to fraction form
    216,909.78/299,333.40 = 124,995.30/x
  3. Step 3: Cross multiply
    216,909.78x = 299,333.40 × 124,995.30
  4. Step 4: Simplify right side
    216,909.78x = 37,415,268,133.02
  5. Step 5: Solve for x
    x = 37,415,268,133.02/216,909.78
  6. Step 6: Final answer
    x = 172,492.31

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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.