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Finding the Fourth Proportional to 228,101.72, 342,130.59 and 70,287.80

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Solution

The fourth proportional to 228,101.72, 342,130.59 and 70,287.80 is: 105,424.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,101.72 : 342,130.59 = 70,287.80 : x
  2. Step 2: Convert to fraction form
    228,101.72/342,130.59 = 70,287.80/x
  3. Step 3: Cross multiply
    228,101.72x = 342,130.59 × 70,287.80
  4. Step 4: Simplify right side
    228,101.72x = 24,047,606,483.80
  5. Step 5: Solve for x
    x = 24,047,606,483.80/228,101.72
  6. Step 6: Final answer
    x = 105,424.92

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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.