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Finding the Fourth Proportional to 373,545, 515,492.10 and 203,779.80

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Solution

The fourth proportional to 373,545, 515,492.10 and 203,779.80 is: 281,216.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,545 : 515,492.10 = 203,779.80 : x
  2. Step 2: Convert to fraction form
    373,545/515,492.10 = 203,779.80/x
  3. Step 3: Cross multiply
    373,545x = 515,492.10 × 203,779.80
  4. Step 4: Simplify right side
    373,545x = 105,046,877,039.58
  5. Step 5: Solve for x
    x = 105,046,877,039.58/373,545
  6. Step 6: Final answer
    x = 281,216.12

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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.