Home / 286,636.65-429,964.83-128,865.66

Finding the Fourth Proportional to 286,636.65, 429,964.83 and 128,865.66

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Solution

The fourth proportional to 286,636.65, 429,964.83 and 128,865.66 is: 193,302.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,636.65 : 429,964.83 = 128,865.66 : x
  2. Step 2: Convert to fraction form
    286,636.65/429,964.83 = 128,865.66/x
  3. Step 3: Cross multiply
    286,636.65x = 429,964.83 × 128,865.66
  4. Step 4: Simplify right side
    286,636.65x = 55,407,701,594.74
  5. Step 5: Solve for x
    x = 55,407,701,594.74/286,636.65
  6. Step 6: Final answer
    x = 193,302.92

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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.