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Finding the Fourth Proportional to 556,139.80, 834,458.93 and 256,459.75

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Solution

The fourth proportional to 556,139.80, 834,458.93 and 256,459.75 is: 384,804.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,139.80 : 834,458.93 = 256,459.75 : x
  2. Step 2: Convert to fraction form
    556,139.80/834,458.93 = 256,459.75/x
  3. Step 3: Cross multiply
    556,139.80x = 834,458.93 × 256,459.75
  4. Step 4: Simplify right side
    556,139.80x = 214,005,123,118.47
  5. Step 5: Solve for x
    x = 214,005,123,118.47/556,139.80
  6. Step 6: Final answer
    x = 384,804.55

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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.