Home / 289,273.31-433,897.27-78,910.55

Finding the Fourth Proportional to 289,273.31, 433,897.27 and 78,910.55

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Solution

The fourth proportional to 289,273.31, 433,897.27 and 78,910.55 is: 118,362.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,273.31 : 433,897.27 = 78,910.55 : x
  2. Step 2: Convert to fraction form
    289,273.31/433,897.27 = 78,910.55/x
  3. Step 3: Cross multiply
    289,273.31x = 433,897.27 × 78,910.55
  4. Step 4: Simplify right side
    289,273.31x = 34,239,072,219.20
  5. Step 5: Solve for x
    x = 34,239,072,219.20/289,273.31
  6. Step 6: Final answer
    x = 118,362.36

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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.