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Finding the Fourth Proportional to 280,045.60, 420,068.40 and 93,057.10

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Solution

The fourth proportional to 280,045.60, 420,068.40 and 93,057.10 is: 139,585.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,045.60 : 420,068.40 = 93,057.10 : x
  2. Step 2: Convert to fraction form
    280,045.60/420,068.40 = 93,057.10/x
  3. Step 3: Cross multiply
    280,045.60x = 420,068.40 × 93,057.10
  4. Step 4: Simplify right side
    280,045.60x = 39,090,347,105.64
  5. Step 5: Solve for x
    x = 39,090,347,105.64/280,045.60
  6. Step 6: Final answer
    x = 139,585.65

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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.