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Finding the Fourth Proportional to 288,569.70, 432,854.55 and 235,425.60

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Solution

The fourth proportional to 288,569.70, 432,854.55 and 235,425.60 is: 353,138.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,569.70 : 432,854.55 = 235,425.60 : x
  2. Step 2: Convert to fraction form
    288,569.70/432,854.55 = 235,425.60/x
  3. Step 3: Cross multiply
    288,569.70x = 432,854.55 × 235,425.60
  4. Step 4: Simplify right side
    288,569.70x = 101,905,042,146.48
  5. Step 5: Solve for x
    x = 101,905,042,146.48/288,569.70
  6. Step 6: Final answer
    x = 353,138.40

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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.