Home / 285,550.20-428,325.30-85,901.40

Finding the Fourth Proportional to 285,550.20, 428,325.30 and 85,901.40

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Solution

The fourth proportional to 285,550.20, 428,325.30 and 85,901.40 is: 128,852.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,550.20 : 428,325.30 = 85,901.40 : x
  2. Step 2: Convert to fraction form
    285,550.20/428,325.30 = 85,901.40/x
  3. Step 3: Cross multiply
    285,550.20x = 428,325.30 × 85,901.40
  4. Step 4: Simplify right side
    285,550.20x = 36,793,742,925.42
  5. Step 5: Solve for x
    x = 36,793,742,925.42/285,550.20
  6. Step 6: Final answer
    x = 128,852.10

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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.