Home / 209,082.51-288,513.05-118,420.38

Finding the Fourth Proportional to 209,082.51, 288,513.05 and 118,420.38

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Solution

The fourth proportional to 209,082.51, 288,513.05 and 118,420.38 is: 163,408.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,082.51 : 288,513.05 = 118,420.38 : x
  2. Step 2: Convert to fraction form
    209,082.51/288,513.05 = 118,420.38/x
  3. Step 3: Cross multiply
    209,082.51x = 288,513.05 × 118,420.38
  4. Step 4: Simplify right side
    209,082.51x = 34,165,824,423.86
  5. Step 5: Solve for x
    x = 34,165,824,423.86/209,082.51
  6. Step 6: Final answer
    x = 163,408.33

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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.