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Finding the Fourth Proportional to 556,479.40, 834,354.60 and 219,316.90

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Solution

The fourth proportional to 556,479.40, 834,354.60 and 219,316.90 is: 328,831.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,479.40 : 834,354.60 = 219,316.90 : x
  2. Step 2: Convert to fraction form
    556,479.40/834,354.60 = 219,316.90/x
  3. Step 3: Cross multiply
    556,479.40x = 834,354.60 × 219,316.90
  4. Step 4: Simplify right side
    556,479.40x = 182,988,064,372.74
  5. Step 5: Solve for x
    x = 182,988,064,372.74/556,479.40
  6. Step 6: Final answer
    x = 328,831.70

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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.