Home / 311,927.04-429,953.76-243,823.68

Finding the Fourth Proportional to 311,927.04, 429,953.76 and 243,823.68

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Solution

The fourth proportional to 311,927.04, 429,953.76 and 243,823.68 is: 336,081.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,927.04 : 429,953.76 = 243,823.68 : x
  2. Step 2: Convert to fraction form
    311,927.04/429,953.76 = 243,823.68/x
  3. Step 3: Cross multiply
    311,927.04x = 429,953.76 × 243,823.68
  4. Step 4: Simplify right side
    311,927.04x = 104,832,907,993.04
  5. Step 5: Solve for x
    x = 104,832,907,993.04/311,927.04
  6. Step 6: Final answer
    x = 336,081.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.