Home / 280,280.13-420,424.04-93,291.63

Finding the Fourth Proportional to 280,280.13, 420,424.04 and 93,291.63

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Solution

The fourth proportional to 280,280.13, 420,424.04 and 93,291.63 is: 139,938.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,280.13 : 420,424.04 = 93,291.63 : x
  2. Step 2: Convert to fraction form
    280,280.13/420,424.04 = 93,291.63/x
  3. Step 3: Cross multiply
    280,280.13x = 420,424.04 × 93,291.63
  4. Step 4: Simplify right side
    280,280.13x = 39,222,043,982.79
  5. Step 5: Solve for x
    x = 39,222,043,982.79/280,280.13
  6. Step 6: Final answer
    x = 139,938.72

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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.