Home / 442,948.40-663,985.20-218,124.80

Finding the Fourth Proportional to 442,948.40, 663,985.20 and 218,124.80

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Solution

The fourth proportional to 442,948.40, 663,985.20 and 218,124.80 is: 326,971.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,948.40 : 663,985.20 = 218,124.80 : x
  2. Step 2: Convert to fraction form
    442,948.40/663,985.20 = 218,124.80/x
  3. Step 3: Cross multiply
    442,948.40x = 663,985.20 × 218,124.80
  4. Step 4: Simplify right side
    442,948.40x = 144,831,638,952.96
  5. Step 5: Solve for x
    x = 144,831,638,952.96/442,948.40
  6. Step 6: Final answer
    x = 326,971.81

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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.