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Finding the Fourth Proportional to 429,951.60, 644,927.40 and 163,623.60

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Solution

The fourth proportional to 429,951.60, 644,927.40 and 163,623.60 is: 245,435.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,951.60 : 644,927.40 = 163,623.60 : x
  2. Step 2: Convert to fraction form
    429,951.60/644,927.40 = 163,623.60/x
  3. Step 3: Cross multiply
    429,951.60x = 644,927.40 × 163,623.60
  4. Step 4: Simplify right side
    429,951.60x = 105,525,342,926.64
  5. Step 5: Solve for x
    x = 105,525,342,926.64/429,951.60
  6. Step 6: Final answer
    x = 245,435.40

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Double scale
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Similar ratio
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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.