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Finding the Fourth Proportional to 620,646.92, 930,968.98 and 165,238.28

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Solution

The fourth proportional to 620,646.92, 930,968.98 and 165,238.28 is: 247,857.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,646.92 : 930,968.98 = 165,238.28 : x
  2. Step 2: Convert to fraction form
    620,646.92/930,968.98 = 165,238.28/x
  3. Step 3: Cross multiply
    620,646.92x = 930,968.98 × 165,238.28
  4. Step 4: Simplify right side
    620,646.92x = 153,831,712,988.55
  5. Step 5: Solve for x
    x = 153,831,712,988.55/620,646.92
  6. Step 6: Final answer
    x = 247,857.05

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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.