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Finding the Fourth Proportional to 347,007.80, 520,511.70 and 97,689.80

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Solution

The fourth proportional to 347,007.80, 520,511.70 and 97,689.80 is: 146,534.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,007.80 : 520,511.70 = 97,689.80 : x
  2. Step 2: Convert to fraction form
    347,007.80/520,511.70 = 97,689.80/x
  3. Step 3: Cross multiply
    347,007.80x = 520,511.70 × 97,689.80
  4. Step 4: Simplify right side
    347,007.80x = 50,848,683,870.66
  5. Step 5: Solve for x
    x = 50,848,683,870.66/347,007.80
  6. Step 6: Final answer
    x = 146,534.70

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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.