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Finding the Fourth Proportional to 228,625.16, 315,656.76 and 142,714.94

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Solution

The fourth proportional to 228,625.16, 315,656.76 and 142,714.94 is: 197,042.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,625.16 : 315,656.76 = 142,714.94 : x
  2. Step 2: Convert to fraction form
    228,625.16/315,656.76 = 142,714.94/x
  3. Step 3: Cross multiply
    228,625.16x = 315,656.76 × 142,714.94
  4. Step 4: Simplify right side
    228,625.16x = 45,048,933,985.71
  5. Step 5: Solve for x
    x = 45,048,933,985.71/228,625.16
  6. Step 6: Final answer
    x = 197,042.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.