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Finding the Fourth Proportional to 210,005.55, 315,008.33 and 130,107.15

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Solution

The fourth proportional to 210,005.55, 315,008.33 and 130,107.15 is: 195,160.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,005.55 : 315,008.33 = 130,107.15 : x
  2. Step 2: Convert to fraction form
    210,005.55/315,008.33 = 130,107.15/x
  3. Step 3: Cross multiply
    210,005.55x = 315,008.33 × 130,107.15
  4. Step 4: Simplify right side
    210,005.55x = 40,984,835,392.02
  5. Step 5: Solve for x
    x = 40,984,835,392.02/210,005.55
  6. Step 6: Final answer
    x = 195,160.73

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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.