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Finding the Fourth Proportional to 353,394.89, 530,089.90 and 143,029.79

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Solution

The fourth proportional to 353,394.89, 530,089.90 and 143,029.79 is: 214,543.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,394.89 : 530,089.90 = 143,029.79 : x
  2. Step 2: Convert to fraction form
    353,394.89/530,089.90 = 143,029.79/x
  3. Step 3: Cross multiply
    353,394.89x = 530,089.90 × 143,029.79
  4. Step 4: Simplify right side
    353,394.89x = 75,818,644,070.10
  5. Step 5: Solve for x
    x = 75,818,644,070.10/353,394.89
  6. Step 6: Final answer
    x = 214,543.69

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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.