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Finding the Fourth Proportional to 436,248.40, 653,886.60 and 169,920.40

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Solution

The fourth proportional to 436,248.40, 653,886.60 and 169,920.40 is: 254,691.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,248.40 : 653,886.60 = 169,920.40 : x
  2. Step 2: Convert to fraction form
    436,248.40/653,886.60 = 169,920.40/x
  3. Step 3: Cross multiply
    436,248.40x = 653,886.60 × 169,920.40
  4. Step 4: Simplify right side
    436,248.40x = 111,108,672,626.64
  5. Step 5: Solve for x
    x = 111,108,672,626.64/436,248.40
  6. Step 6: Final answer
    x = 254,691.30

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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.