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Finding the Fourth Proportional to 342,212.80, 513,902.40 and 243,068.80

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Solution

The fourth proportional to 342,212.80, 513,902.40 and 243,068.80 is: 365,017.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,212.80 : 513,902.40 = 243,068.80 : x
  2. Step 2: Convert to fraction form
    342,212.80/513,902.40 = 243,068.80/x
  3. Step 3: Cross multiply
    342,212.80x = 513,902.40 × 243,068.80
  4. Step 4: Simplify right side
    342,212.80x = 124,913,639,685.12
  5. Step 5: Solve for x
    x = 124,913,639,685.12/342,212.80
  6. Step 6: Final answer
    x = 365,017.44

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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.