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Finding the Fourth Proportional to 342,938.40, 514,407.60 and 216,967.20

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Solution

The fourth proportional to 342,938.40, 514,407.60 and 216,967.20 is: 325,450.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,938.40 : 514,407.60 = 216,967.20 : x
  2. Step 2: Convert to fraction form
    342,938.40/514,407.60 = 216,967.20/x
  3. Step 3: Cross multiply
    342,938.40x = 514,407.60 × 216,967.20
  4. Step 4: Simplify right side
    342,938.40x = 111,609,576,630.72
  5. Step 5: Solve for x
    x = 111,609,576,630.72/342,938.40
  6. Step 6: Final answer
    x = 325,450.80

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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.