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Finding the Fourth Proportional to 280,010.40, 419,746.80 and 92,925.60

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Solution

The fourth proportional to 280,010.40, 419,746.80 and 92,925.60 is: 139,299.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,010.40 : 419,746.80 = 92,925.60 : x
  2. Step 2: Convert to fraction form
    280,010.40/419,746.80 = 92,925.60/x
  3. Step 3: Cross multiply
    280,010.40x = 419,746.80 × 92,925.60
  4. Step 4: Simplify right side
    280,010.40x = 39,005,223,238.08
  5. Step 5: Solve for x
    x = 39,005,223,238.08/280,010.40
  6. Step 6: Final answer
    x = 139,299.19

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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.