Home / 215,479.40-323,219.10-140,829.80

Finding the Fourth Proportional to 215,479.40, 323,219.10 and 140,829.80

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Solution

The fourth proportional to 215,479.40, 323,219.10 and 140,829.80 is: 211,244.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,479.40 : 323,219.10 = 140,829.80 : x
  2. Step 2: Convert to fraction form
    215,479.40/323,219.10 = 140,829.80/x
  3. Step 3: Cross multiply
    215,479.40x = 323,219.10 × 140,829.80
  4. Step 4: Simplify right side
    215,479.40x = 45,518,881,209.18
  5. Step 5: Solve for x
    x = 45,518,881,209.18/215,479.40
  6. Step 6: Final answer
    x = 211,244.70

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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.