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Finding the Fourth Proportional to 508,740.75, 702,071.15 and 279,319.59

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Solution

The fourth proportional to 508,740.75, 702,071.15 and 279,319.59 is: 385,465.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,740.75 : 702,071.15 = 279,319.59 : x
  2. Step 2: Convert to fraction form
    508,740.75/702,071.15 = 279,319.59/x
  3. Step 3: Cross multiply
    508,740.75x = 702,071.15 × 279,319.59
  4. Step 4: Simplify right side
    508,740.75x = 196,102,224,372.23
  5. Step 5: Solve for x
    x = 196,102,224,372.23/508,740.75
  6. Step 6: Final answer
    x = 385,465.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.