Home / 311,931.04-429,959.28-243,827.68

Finding the Fourth Proportional to 311,931.04, 429,959.28 and 243,827.68

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Solution

The fourth proportional to 311,931.04, 429,959.28 and 243,827.68 is: 336,087.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,931.04 : 429,959.28 = 243,827.68 : x
  2. Step 2: Convert to fraction form
    311,931.04/429,959.28 = 243,827.68/x
  3. Step 3: Cross multiply
    311,931.04x = 429,959.28 × 243,827.68
  4. Step 4: Simplify right side
    311,931.04x = 104,835,973,736.87
  5. Step 5: Solve for x
    x = 104,835,973,736.87/311,931.04
  6. Step 6: Final answer
    x = 336,087.02

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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.