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Finding the Fourth Proportional to 245,632.30, 368,483.02 and 85,684.91

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Solution

The fourth proportional to 245,632.30, 368,483.02 and 85,684.91 is: 128,539.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,632.30 : 368,483.02 = 85,684.91 : x
  2. Step 2: Convert to fraction form
    245,632.30/368,483.02 = 85,684.91/x
  3. Step 3: Cross multiply
    245,632.30x = 368,483.02 × 85,684.91
  4. Step 4: Simplify right side
    245,632.30x = 31,573,432,348.60
  5. Step 5: Solve for x
    x = 31,573,432,348.60/245,632.30
  6. Step 6: Final answer
    x = 128,539.42

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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.