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Finding the Fourth Proportional to 379,800.05, 569,700.07 and 99,314.87

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Solution

The fourth proportional to 379,800.05, 569,700.07 and 99,314.87 is: 148,972.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,800.05 : 569,700.07 = 99,314.87 : x
  2. Step 2: Convert to fraction form
    379,800.05/569,700.07 = 99,314.87/x
  3. Step 3: Cross multiply
    379,800.05x = 569,700.07 × 99,314.87
  4. Step 4: Simplify right side
    379,800.05x = 56,579,685,294.25
  5. Step 5: Solve for x
    x = 56,579,685,294.25/379,800.05
  6. Step 6: Final answer
    x = 148,972.30

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Similar ratio
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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.