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Finding the Fourth Proportional to 353,384.85, 530,070.42 and 100,666.98

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Solution

The fourth proportional to 353,384.85, 530,070.42 and 100,666.98 is: 150,998.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,384.85 : 530,070.42 = 100,666.98 : x
  2. Step 2: Convert to fraction form
    353,384.85/530,070.42 = 100,666.98/x
  3. Step 3: Cross multiply
    353,384.85x = 530,070.42 × 100,666.98
  4. Step 4: Simplify right side
    353,384.85x = 53,360,588,368.73
  5. Step 5: Solve for x
    x = 53,360,588,368.73/353,384.85
  6. Step 6: Final answer
    x = 150,998.52

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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.