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Finding the Fourth Proportional to 210,359.16, 315,380.16 and 109,048.20

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Solution

The fourth proportional to 210,359.16, 315,380.16 and 109,048.20 is: 163,490.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,359.16 : 315,380.16 = 109,048.20 : x
  2. Step 2: Convert to fraction form
    210,359.16/315,380.16 = 109,048.20/x
  3. Step 3: Cross multiply
    210,359.16x = 315,380.16 × 109,048.20
  4. Step 4: Simplify right side
    210,359.16x = 34,391,638,763.71
  5. Step 5: Solve for x
    x = 34,391,638,763.71/210,359.16
  6. Step 6: Final answer
    x = 163,490.09

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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.