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Finding the Fourth Proportional to 210,042.28, 315,059.10 and 69,802.28

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Solution

The fourth proportional to 210,042.28, 315,059.10 and 69,802.28 is: 104,701.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,042.28 : 315,059.10 = 69,802.28 : x
  2. Step 2: Convert to fraction form
    210,042.28/315,059.10 = 69,802.28/x
  3. Step 3: Cross multiply
    210,042.28x = 315,059.10 × 69,802.28
  4. Step 4: Simplify right side
    210,042.28x = 21,991,843,514.75
  5. Step 5: Solve for x
    x = 21,991,843,514.75/210,042.28
  6. Step 6: Final answer
    x = 104,701.98

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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.