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Finding the Fourth Proportional to 342,124.80, 513,187.20 and 105,446.40

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Solution

The fourth proportional to 342,124.80, 513,187.20 and 105,446.40 is: 158,169.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,124.80 : 513,187.20 = 105,446.40 : x
  2. Step 2: Convert to fraction form
    342,124.80/513,187.20 = 105,446.40/x
  3. Step 3: Cross multiply
    342,124.80x = 513,187.20 × 105,446.40
  4. Step 4: Simplify right side
    342,124.80x = 54,113,742,766.08
  5. Step 5: Solve for x
    x = 54,113,742,766.08/342,124.80
  6. Step 6: Final answer
    x = 158,169.60

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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.