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Finding the Fourth Proportional to 347,675.40, 521,513.10 and 312,683.40

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Solution

The fourth proportional to 347,675.40, 521,513.10 and 312,683.40 is: 469,025.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,675.40 : 521,513.10 = 312,683.40 : x
  2. Step 2: Convert to fraction form
    347,675.40/521,513.10 = 312,683.40/x
  3. Step 3: Cross multiply
    347,675.40x = 521,513.10 × 312,683.40
  4. Step 4: Simplify right side
    347,675.40x = 163,068,489,252.54
  5. Step 5: Solve for x
    x = 163,068,489,252.54/347,675.40
  6. Step 6: Final answer
    x = 469,025.10

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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.