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Finding the Fourth Proportional to 288,672.90, 433,009.35 and 218,688.90

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Solution

The fourth proportional to 288,672.90, 433,009.35 and 218,688.90 is: 328,033.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,672.90 : 433,009.35 = 218,688.90 : x
  2. Step 2: Convert to fraction form
    288,672.90/433,009.35 = 218,688.90/x
  3. Step 3: Cross multiply
    288,672.90x = 433,009.35 × 218,688.90
  4. Step 4: Simplify right side
    288,672.90x = 94,694,338,441.22
  5. Step 5: Solve for x
    x = 94,694,338,441.22/288,672.90
  6. Step 6: Final answer
    x = 328,033.35

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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.