Home / 210,816.28-315,717.71-120,585.45

Finding the Fourth Proportional to 210,816.28, 315,717.71 and 120,585.45

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Solution

The fourth proportional to 210,816.28, 315,717.71 and 120,585.45 is: 180,588.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,816.28 : 315,717.71 = 120,585.45 : x
  2. Step 2: Convert to fraction form
    210,816.28/315,717.71 = 120,585.45/x
  3. Step 3: Cross multiply
    210,816.28x = 315,717.71 × 120,585.45
  4. Step 4: Simplify right side
    210,816.28x = 38,070,962,133.32
  5. Step 5: Solve for x
    x = 38,070,962,133.32/210,816.28
  6. Step 6: Final answer
    x = 180,588.34

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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.