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Finding the Fourth Proportional to 212,901.76, 293,798.64 and 117,406.72

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Solution

The fourth proportional to 212,901.76, 293,798.64 and 117,406.72 is: 162,018.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,901.76 : 293,798.64 = 117,406.72 : x
  2. Step 2: Convert to fraction form
    212,901.76/293,798.64 = 117,406.72/x
  3. Step 3: Cross multiply
    212,901.76x = 293,798.64 × 117,406.72
  4. Step 4: Simplify right side
    212,901.76x = 34,493,934,662.86
  5. Step 5: Solve for x
    x = 34,493,934,662.86/212,901.76
  6. Step 6: Final answer
    x = 162,018.08

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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.