Home / 209,972.16-315,173.28-163,730.88

Finding the Fourth Proportional to 209,972.16, 315,173.28 and 163,730.88

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Solution

The fourth proportional to 209,972.16, 315,173.28 and 163,730.88 is: 245,764.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,972.16 : 315,173.28 = 163,730.88 : x
  2. Step 2: Convert to fraction form
    209,972.16/315,173.28 = 163,730.88/x
  3. Step 3: Cross multiply
    209,972.16x = 315,173.28 × 163,730.88
  4. Step 4: Simplify right side
    209,972.16x = 51,603,598,486.89
  5. Step 5: Solve for x
    x = 51,603,598,486.89/209,972.16
  6. Step 6: Final answer
    x = 245,764.00

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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.