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Finding the Fourth Proportional to 402,336.95, 554,994.03 and 251,171.51

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Solution

The fourth proportional to 402,336.95, 554,994.03 and 251,171.51 is: 346,472.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,336.95 : 554,994.03 = 251,171.51 : x
  2. Step 2: Convert to fraction form
    402,336.95/554,994.03 = 251,171.51/x
  3. Step 3: Cross multiply
    402,336.95x = 554,994.03 × 251,171.51
  4. Step 4: Simplify right side
    402,336.95x = 139,398,686,871.09
  5. Step 5: Solve for x
    x = 139,398,686,871.09/402,336.95
  6. Step 6: Final answer
    x = 346,472.50

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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.