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Finding the Fourth Proportional to 288,916.40, 433,374.60 and 218,932.40

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Solution

The fourth proportional to 288,916.40, 433,374.60 and 218,932.40 is: 328,398.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,916.40 : 433,374.60 = 218,932.40 : x
  2. Step 2: Convert to fraction form
    288,916.40/433,374.60 = 218,932.40/x
  3. Step 3: Cross multiply
    288,916.40x = 433,374.60 × 218,932.40
  4. Step 4: Simplify right side
    288,916.40x = 94,879,741,277.04
  5. Step 5: Solve for x
    x = 94,879,741,277.04/288,916.40
  6. Step 6: Final answer
    x = 328,398.60

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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.