Home / 385,322.40-577,983.60-243,604.80

Finding the Fourth Proportional to 385,322.40, 577,983.60 and 243,604.80

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Solution

The fourth proportional to 385,322.40, 577,983.60 and 243,604.80 is: 365,407.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,322.40 : 577,983.60 = 243,604.80 : x
  2. Step 2: Convert to fraction form
    385,322.40/577,983.60 = 243,604.80/x
  3. Step 3: Cross multiply
    385,322.40x = 577,983.60 × 243,604.80
  4. Step 4: Simplify right side
    385,322.40x = 140,799,579,281.28
  5. Step 5: Solve for x
    x = 140,799,579,281.28/385,322.40
  6. Step 6: Final answer
    x = 365,407.20

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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.