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Finding the Fourth Proportional to 507,279.73, 760,895.90 and 207,686.25

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Solution

The fourth proportional to 507,279.73, 760,895.90 and 207,686.25 is: 311,519.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,279.73 : 760,895.90 = 207,686.25 : x
  2. Step 2: Convert to fraction form
    507,279.73/760,895.90 = 207,686.25/x
  3. Step 3: Cross multiply
    507,279.73x = 760,895.90 × 207,686.25
  4. Step 4: Simplify right side
    507,279.73x = 158,027,616,111.38
  5. Step 5: Solve for x
    x = 158,027,616,111.38/507,279.73
  6. Step 6: Final answer
    x = 311,519.67

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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.