Home / 208,921.60-288,312-113,428.24

Finding the Fourth Proportional to 208,921.60, 288,312 and 113,428.24

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Solution

The fourth proportional to 208,921.60, 288,312 and 113,428.24 is: 156,531.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,921.60 : 288,312 = 113,428.24 : x
  2. Step 2: Convert to fraction form
    208,921.60/288,312 = 113,428.24/x
  3. Step 3: Cross multiply
    208,921.60x = 288,312 × 113,428.24
  4. Step 4: Simplify right side
    208,921.60x = 32,702,722,730.88
  5. Step 5: Solve for x
    x = 32,702,722,730.88/208,921.60
  6. Step 6: Final answer
    x = 156,531.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.