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Finding the Fourth Proportional to 436,442.40, 654,663.60 and 120,899.16

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Solution

The fourth proportional to 436,442.40, 654,663.60 and 120,899.16 is: 181,348.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,442.40 : 654,663.60 = 120,899.16 : x
  2. Step 2: Convert to fraction form
    436,442.40/654,663.60 = 120,899.16/x
  3. Step 3: Cross multiply
    436,442.40x = 654,663.60 × 120,899.16
  4. Step 4: Simplify right side
    436,442.40x = 79,148,279,322.58
  5. Step 5: Solve for x
    x = 79,148,279,322.58/436,442.40
  6. Step 6: Final answer
    x = 181,348.74

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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.