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Finding the Fourth Proportional to 210,000.72, 289,791.12 and 119,354.40

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Solution

The fourth proportional to 210,000.72, 289,791.12 and 119,354.40 is: 164,703.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,000.72 : 289,791.12 = 119,354.40 : x
  2. Step 2: Convert to fraction form
    210,000.72/289,791.12 = 119,354.40/x
  3. Step 3: Cross multiply
    210,000.72x = 289,791.12 × 119,354.40
  4. Step 4: Simplify right side
    210,000.72x = 34,587,845,252.93
  5. Step 5: Solve for x
    x = 34,587,845,252.93/210,000.72
  6. Step 6: Final answer
    x = 164,703.46

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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.