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Finding the Fourth Proportional to 356,878.72, 535,148.64 and 207,164.92

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Solution

The fourth proportional to 356,878.72, 535,148.64 and 207,164.92 is: 310,649.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,878.72 : 535,148.64 = 207,164.92 : x
  2. Step 2: Convert to fraction form
    356,878.72/535,148.64 = 207,164.92/x
  3. Step 3: Cross multiply
    356,878.72x = 535,148.64 × 207,164.92
  4. Step 4: Simplify right side
    356,878.72x = 110,864,025,193.71
  5. Step 5: Solve for x
    x = 110,864,025,193.71/356,878.72
  6. Step 6: Final answer
    x = 310,649.02

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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.