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Finding the Fourth Proportional to 212,415.77, 318,530.16 and 112,552.94

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Solution

The fourth proportional to 212,415.77, 318,530.16 and 112,552.94 is: 168,779.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,415.77 : 318,530.16 = 112,552.94 : x
  2. Step 2: Convert to fraction form
    212,415.77/318,530.16 = 112,552.94/x
  3. Step 3: Cross multiply
    212,415.77x = 318,530.16 × 112,552.94
  4. Step 4: Simplify right side
    212,415.77x = 35,851,506,783.00
  5. Step 5: Solve for x
    x = 35,851,506,783.00/212,415.77
  6. Step 6: Final answer
    x = 168,779.88

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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.