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Finding the Fourth Proportional to 245,007.20, 367,510.80 and 78,795.20

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Solution

The fourth proportional to 245,007.20, 367,510.80 and 78,795.20 is: 118,192.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,007.20 : 367,510.80 = 78,795.20 : x
  2. Step 2: Convert to fraction form
    245,007.20/367,510.80 = 78,795.20/x
  3. Step 3: Cross multiply
    245,007.20x = 367,510.80 × 78,795.20
  4. Step 4: Simplify right side
    245,007.20x = 28,958,086,988.16
  5. Step 5: Solve for x
    x = 28,958,086,988.16/245,007.20
  6. Step 6: Final answer
    x = 118,192.80

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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.