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Finding the Fourth Proportional to 556,479.90, 834,355.35 and 219,317.40

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Solution

The fourth proportional to 556,479.90, 834,355.35 and 219,317.40 is: 328,832.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,479.90 : 834,355.35 = 219,317.40 : x
  2. Step 2: Convert to fraction form
    556,479.90/834,355.35 = 219,317.40/x
  3. Step 3: Cross multiply
    556,479.90x = 834,355.35 × 219,317.40
  4. Step 4: Simplify right side
    556,479.90x = 182,988,646,038.09
  5. Step 5: Solve for x
    x = 182,988,646,038.09/556,479.90
  6. Step 6: Final answer
    x = 328,832.44

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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.