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Finding the Fourth Proportional to 385,354.02, 578,020.19 and 104,873.70

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Solution

The fourth proportional to 385,354.02, 578,020.19 and 104,873.70 is: 157,307.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,354.02 : 578,020.19 = 104,873.70 : x
  2. Step 2: Convert to fraction form
    385,354.02/578,020.19 = 104,873.70/x
  3. Step 3: Cross multiply
    385,354.02x = 578,020.19 × 104,873.70
  4. Step 4: Simplify right side
    385,354.02x = 60,619,116,000.00
  5. Step 5: Solve for x
    x = 60,619,116,000.00/385,354.02
  6. Step 6: Final answer
    x = 157,307.60

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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.