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Finding the Fourth Proportional to 463,934.40, 640,228.95 and 259,986.93

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Solution

The fourth proportional to 463,934.40, 640,228.95 and 259,986.93 is: 358,781.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,934.40 : 640,228.95 = 259,986.93 : x
  2. Step 2: Convert to fraction form
    463,934.40/640,228.95 = 259,986.93/x
  3. Step 3: Cross multiply
    463,934.40x = 640,228.95 × 259,986.93
  4. Step 4: Simplify right side
    463,934.40x = 166,451,159,207.62
  5. Step 5: Solve for x
    x = 166,451,159,207.62/463,934.40
  6. Step 6: Final answer
    x = 358,781.67

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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.