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Finding the Fourth Proportional to 228,411.80, 342,666.30 and 70,656.20

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Solution

The fourth proportional to 228,411.80, 342,666.30 and 70,656.20 is: 105,999.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,411.80 : 342,666.30 = 70,656.20 : x
  2. Step 2: Convert to fraction form
    228,411.80/342,666.30 = 70,656.20/x
  3. Step 3: Cross multiply
    228,411.80x = 342,666.30 × 70,656.20
  4. Step 4: Simplify right side
    228,411.80x = 24,211,498,626.06
  5. Step 5: Solve for x
    x = 24,211,498,626.06/228,411.80
  6. Step 6: Final answer
    x = 105,999.33

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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.