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Finding the Fourth Proportional to 288,875.35, 433,078.25 and 120,521.12

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Solution

The fourth proportional to 288,875.35, 433,078.25 and 120,521.12 is: 180,683.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,875.35 : 433,078.25 = 120,521.12 : x
  2. Step 2: Convert to fraction form
    288,875.35/433,078.25 = 120,521.12/x
  3. Step 3: Cross multiply
    288,875.35x = 433,078.25 × 120,521.12
  4. Step 4: Simplify right side
    288,875.35x = 52,195,072,969.64
  5. Step 5: Solve for x
    x = 52,195,072,969.64/288,875.35
  6. Step 6: Final answer
    x = 180,683.72

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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.