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Finding the Fourth Proportional to 429,950.60, 644,925.90 and 163,622.60

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Solution

The fourth proportional to 429,950.60, 644,925.90 and 163,622.60 is: 245,433.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,950.60 : 644,925.90 = 163,622.60 : x
  2. Step 2: Convert to fraction form
    429,950.60/644,925.90 = 163,622.60/x
  3. Step 3: Cross multiply
    429,950.60x = 644,925.90 × 163,622.60
  4. Step 4: Simplify right side
    429,950.60x = 105,524,452,565.34
  5. Step 5: Solve for x
    x = 105,524,452,565.34/429,950.60
  6. Step 6: Final answer
    x = 245,433.90

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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.