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Finding the Fourth Proportional to 210,140.10, 315,210.15 and 162,900.90

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Solution

The fourth proportional to 210,140.10, 315,210.15 and 162,900.90 is: 244,351.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,140.10 : 315,210.15 = 162,900.90 : x
  2. Step 2: Convert to fraction form
    210,140.10/315,210.15 = 162,900.90/x
  3. Step 3: Cross multiply
    210,140.10x = 315,210.15 × 162,900.90
  4. Step 4: Simplify right side
    210,140.10x = 51,348,017,124.14
  5. Step 5: Solve for x
    x = 51,348,017,124.14/210,140.10
  6. Step 6: Final answer
    x = 244,351.35

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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.