Home / 289,260.06-433,877.40-78,897.30

Finding the Fourth Proportional to 289,260.06, 433,877.40 and 78,897.30

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Solution

The fourth proportional to 289,260.06, 433,877.40 and 78,897.30 is: 118,342.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,260.06 : 433,877.40 = 78,897.30 : x
  2. Step 2: Convert to fraction form
    289,260.06/433,877.40 = 78,897.30/x
  3. Step 3: Cross multiply
    289,260.06x = 433,877.40 × 78,897.30
  4. Step 4: Simplify right side
    289,260.06x = 34,231,755,391.02
  5. Step 5: Solve for x
    x = 34,231,755,391.02/289,260.06
  6. Step 6: Final answer
    x = 118,342.49

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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.