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Finding the Fourth Proportional to 509,330.34, 702,841.32 and 279,903.66

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Solution

The fourth proportional to 509,330.34, 702,841.32 and 279,903.66 is: 386,248.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,330.34 : 702,841.32 = 279,903.66 : x
  2. Step 2: Convert to fraction form
    509,330.34/702,841.32 = 279,903.66/x
  3. Step 3: Cross multiply
    509,330.34x = 702,841.32 × 279,903.66
  4. Step 4: Simplify right side
    509,330.34x = 196,727,857,867.23
  5. Step 5: Solve for x
    x = 196,727,857,867.23/509,330.34
  6. Step 6: Final answer
    x = 386,248.06

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1.5x scale

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.