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Finding the Fourth Proportional to 210,490.01, 315,730.54 and 68,335.06

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Solution

The fourth proportional to 210,490.01, 315,730.54 and 68,335.06 is: 102,501.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,490.01 : 315,730.54 = 68,335.06 : x
  2. Step 2: Convert to fraction form
    210,490.01/315,730.54 = 68,335.06/x
  3. Step 3: Cross multiply
    210,490.01x = 315,730.54 × 68,335.06
  4. Step 4: Simplify right side
    210,490.01x = 21,575,465,394.73
  5. Step 5: Solve for x
    x = 21,575,465,394.73/210,490.01
  6. Step 6: Final answer
    x = 102,501.14

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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.