Home / 272,916.10-409,374.15-85,903.30

Finding the Fourth Proportional to 272,916.10, 409,374.15 and 85,903.30

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Solution

The fourth proportional to 272,916.10, 409,374.15 and 85,903.30 is: 128,854.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,916.10 : 409,374.15 = 85,903.30 : x
  2. Step 2: Convert to fraction form
    272,916.10/409,374.15 = 85,903.30/x
  3. Step 3: Cross multiply
    272,916.10x = 409,374.15 × 85,903.30
  4. Step 4: Simplify right side
    272,916.10x = 35,166,590,419.70
  5. Step 5: Solve for x
    x = 35,166,590,419.70/272,916.10
  6. Step 6: Final answer
    x = 128,854.95

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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.