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Finding the Fourth Proportional to 634,218.94, 875,215.47 and 347,738.32

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Solution

The fourth proportional to 634,218.94, 875,215.47 and 347,738.32 is: 479,875.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,218.94 : 875,215.47 = 347,738.32 : x
  2. Step 2: Convert to fraction form
    634,218.94/875,215.47 = 347,738.32/x
  3. Step 3: Cross multiply
    634,218.94x = 875,215.47 × 347,738.32
  4. Step 4: Simplify right side
    634,218.94x = 304,345,957,175.81
  5. Step 5: Solve for x
    x = 304,345,957,175.81/634,218.94
  6. Step 6: Final answer
    x = 479,875.23

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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.