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Finding the Fourth Proportional to 430,131.88, 645,303.66 and 149,651.56

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Solution

The fourth proportional to 430,131.88, 645,303.66 and 149,651.56 is: 224,514.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,131.88 : 645,303.66 = 149,651.56 : x
  2. Step 2: Convert to fraction form
    430,131.88/645,303.66 = 149,651.56/x
  3. Step 3: Cross multiply
    430,131.88x = 645,303.66 × 149,651.56
  4. Step 4: Simplify right side
    430,131.88x = 96,570,699,392.71
  5. Step 5: Solve for x
    x = 96,570,699,392.71/430,131.88
  6. Step 6: Final answer
    x = 224,514.16

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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.