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Finding the Fourth Proportional to 358,128.75, 537,103.80 and 105,358.92

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Solution

The fourth proportional to 358,128.75, 537,103.80 and 105,358.92 is: 158,012.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,128.75 : 537,103.80 = 105,358.92 : x
  2. Step 2: Convert to fraction form
    358,128.75/537,103.80 = 105,358.92/x
  3. Step 3: Cross multiply
    358,128.75x = 537,103.80 × 105,358.92
  4. Step 4: Simplify right side
    358,128.75x = 56,588,676,295.90
  5. Step 5: Solve for x
    x = 56,588,676,295.90/358,128.75
  6. Step 6: Final answer
    x = 158,012.10

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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.