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Finding the Fourth Proportional to 280,083.60, 420,125.40 and 93,070.80

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Solution

The fourth proportional to 280,083.60, 420,125.40 and 93,070.80 is: 139,606.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,083.60 : 420,125.40 = 93,070.80 : x
  2. Step 2: Convert to fraction form
    280,083.60/420,125.40 = 93,070.80/x
  3. Step 3: Cross multiply
    280,083.60x = 420,125.40 × 93,070.80
  4. Step 4: Simplify right side
    280,083.60x = 39,101,407,078.32
  5. Step 5: Solve for x
    x = 39,101,407,078.32/280,083.60
  6. Step 6: Final answer
    x = 139,606.20

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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.