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Finding the Fourth Proportional to 465,878.40, 699,124.80 and 170,390.40

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Solution

The fourth proportional to 465,878.40, 699,124.80 and 170,390.40 is: 255,697.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,878.40 : 699,124.80 = 170,390.40 : x
  2. Step 2: Convert to fraction form
    465,878.40/699,124.80 = 170,390.40/x
  3. Step 3: Cross multiply
    465,878.40x = 699,124.80 × 170,390.40
  4. Step 4: Simplify right side
    465,878.40x = 119,124,154,321.92
  5. Step 5: Solve for x
    x = 119,124,154,321.92/465,878.40
  6. Step 6: Final answer
    x = 255,697.96

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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.