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Finding the Fourth Proportional to 379,855.55, 569,530.23 and 209,157.65

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Solution

The fourth proportional to 379,855.55, 569,530.23 and 209,157.65 is: 313,597.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,855.55 : 569,530.23 = 209,157.65 : x
  2. Step 2: Convert to fraction form
    379,855.55/569,530.23 = 209,157.65/x
  3. Step 3: Cross multiply
    379,855.55x = 569,530.23 × 209,157.65
  4. Step 4: Simplify right side
    379,855.55x = 119,121,602,564.04
  5. Step 5: Solve for x
    x = 119,121,602,564.04/379,855.55
  6. Step 6: Final answer
    x = 313,597.11

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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.