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Finding the Fourth Proportional to 474,885.18, 712,492.40 and 208,608.62

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Solution

The fourth proportional to 474,885.18, 712,492.40 and 208,608.62 is: 312,985.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,885.18 : 712,492.40 = 208,608.62 : x
  2. Step 2: Convert to fraction form
    474,885.18/712,492.40 = 208,608.62/x
  3. Step 3: Cross multiply
    474,885.18x = 712,492.40 × 208,608.62
  4. Step 4: Simplify right side
    474,885.18x = 148,632,053,283.55
  5. Step 5: Solve for x
    x = 148,632,053,283.55/474,885.18
  6. Step 6: Final answer
    x = 312,985.24

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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.