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Finding the Fourth Proportional to 210,940.20, 316,410.30 and 70,703.40

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Solution

The fourth proportional to 210,940.20, 316,410.30 and 70,703.40 is: 106,055.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,940.20 : 316,410.30 = 70,703.40 : x
  2. Step 2: Convert to fraction form
    210,940.20/316,410.30 = 70,703.40/x
  3. Step 3: Cross multiply
    210,940.20x = 316,410.30 × 70,703.40
  4. Step 4: Simplify right side
    210,940.20x = 22,371,284,005.02
  5. Step 5: Solve for x
    x = 22,371,284,005.02/210,940.20
  6. Step 6: Final answer
    x = 106,055.10

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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.