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Finding the Fourth Proportional to 210,846.72, 290,965.92 and 115,352.16

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Solution

The fourth proportional to 210,846.72, 290,965.92 and 115,352.16 is: 159,184.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,846.72 : 290,965.92 = 115,352.16 : x
  2. Step 2: Convert to fraction form
    210,846.72/290,965.92 = 115,352.16/x
  3. Step 3: Cross multiply
    210,846.72x = 290,965.92 × 115,352.16
  4. Step 4: Simplify right side
    210,846.72x = 33,563,547,358.39
  5. Step 5: Solve for x
    x = 33,563,547,358.39/210,846.72
  6. Step 6: Final answer
    x = 159,184.58

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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.