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Finding the Fourth Proportional to 228,428.80, 342,643.20 and 59,948.80

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Solution

The fourth proportional to 228,428.80, 342,643.20 and 59,948.80 is: 89,923.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,428.80 : 342,643.20 = 59,948.80 : x
  2. Step 2: Convert to fraction form
    228,428.80/342,643.20 = 59,948.80/x
  3. Step 3: Cross multiply
    228,428.80x = 342,643.20 × 59,948.80
  4. Step 4: Simplify right side
    228,428.80x = 20,541,048,668.16
  5. Step 5: Solve for x
    x = 20,541,048,668.16/228,428.80
  6. Step 6: Final answer
    x = 89,923.20

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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.