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Finding the Fourth Proportional to 375,405.76, 518,070.45 and 228,230.38

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Solution

The fourth proportional to 375,405.76, 518,070.45 and 228,230.38 is: 314,964.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,405.76 : 518,070.45 = 228,230.38 : x
  2. Step 2: Convert to fraction form
    375,405.76/518,070.45 = 228,230.38/x
  3. Step 3: Cross multiply
    375,405.76x = 518,070.45 × 228,230.38
  4. Step 4: Simplify right side
    375,405.76x = 118,239,415,670.27
  5. Step 5: Solve for x
    x = 118,239,415,670.27/375,405.76
  6. Step 6: Final answer
    x = 314,964.31

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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.