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Finding the Fourth Proportional to 539,700, 809,588.88 and 207,276

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Solution

The fourth proportional to 539,700, 809,588.88 and 207,276 is: 310,928.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,700 : 809,588.88 = 207,276 : x
  2. Step 2: Convert to fraction form
    539,700/809,588.88 = 207,276/x
  3. Step 3: Cross multiply
    539,700x = 809,588.88 × 207,276
  4. Step 4: Simplify right side
    539,700x = 167,808,344,690.88
  5. Step 5: Solve for x
    x = 167,808,344,690.88/539,700
  6. Step 6: Final answer
    x = 310,928.93

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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.