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Finding the Fourth Proportional to 607,522.70, 911,412.90 and 208,056.21

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Solution

The fourth proportional to 607,522.70, 911,412.90 and 208,056.21 is: 312,128.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,522.70 : 911,412.90 = 208,056.21 : x
  2. Step 2: Convert to fraction form
    607,522.70/911,412.90 = 208,056.21/x
  3. Step 3: Cross multiply
    607,522.70x = 911,412.90 × 208,056.21
  4. Step 4: Simplify right side
    607,522.70x = 189,625,113,719.11
  5. Step 5: Solve for x
    x = 189,625,113,719.11/607,522.70
  6. Step 6: Final answer
    x = 312,128.44

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1.5x scale

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.