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Finding the Fourth Proportional to 251,653.50, 347,284.23 and 138,478.74

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Solution

The fourth proportional to 251,653.50, 347,284.23 and 138,478.74 is: 191,101.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,653.50 : 347,284.23 = 138,478.74 : x
  2. Step 2: Convert to fraction form
    251,653.50/347,284.23 = 138,478.74/x
  3. Step 3: Cross multiply
    251,653.50x = 347,284.23 × 138,478.74
  4. Step 4: Simplify right side
    251,653.50x = 48,091,482,592.27
  5. Step 5: Solve for x
    x = 48,091,482,592.27/251,653.50
  6. Step 6: Final answer
    x = 191,101.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.