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Finding the Fourth Proportional to 356,867.31, 535,131.46 and 207,153.49

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Solution

The fourth proportional to 356,867.31, 535,131.46 and 207,153.49 is: 310,631.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,867.31 : 535,131.46 = 207,153.49 : x
  2. Step 2: Convert to fraction form
    356,867.31/535,131.46 = 207,153.49/x
  3. Step 3: Cross multiply
    356,867.31x = 535,131.46 × 207,153.49
  4. Step 4: Simplify right side
    356,867.31x = 110,854,349,547.80
  5. Step 5: Solve for x
    x = 110,854,349,547.80/356,867.31
  6. Step 6: Final answer
    x = 310,631.84

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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.