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Finding the Fourth Proportional to 210,880.60, 316,320.90 and 86,192.44

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Solution

The fourth proportional to 210,880.60, 316,320.90 and 86,192.44 is: 129,288.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,880.60 : 316,320.90 = 86,192.44 : x
  2. Step 2: Convert to fraction form
    210,880.60/316,320.90 = 86,192.44/x
  3. Step 3: Cross multiply
    210,880.60x = 316,320.90 × 86,192.44
  4. Step 4: Simplify right side
    210,880.60x = 27,264,470,194.00
  5. Step 5: Solve for x
    x = 27,264,470,194.00/210,880.60
  6. Step 6: Final answer
    x = 129,288.66

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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.