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Finding the Fourth Proportional to 386,457.60, 579,945.60 and 228,518.40

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Solution

The fourth proportional to 386,457.60, 579,945.60 and 228,518.40 is: 342,930.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,457.60 : 579,945.60 = 228,518.40 : x
  2. Step 2: Convert to fraction form
    386,457.60/579,945.60 = 228,518.40/x
  3. Step 3: Cross multiply
    386,457.60x = 579,945.60 × 228,518.40
  4. Step 4: Simplify right side
    386,457.60x = 132,528,240,599.04
  5. Step 5: Solve for x
    x = 132,528,240,599.04/386,457.60
  6. Step 6: Final answer
    x = 342,930.87

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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.