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Finding the Fourth Proportional to 207,509.39, 286,363.50 and 121,452.77

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Solution

The fourth proportional to 207,509.39, 286,363.50 and 121,452.77 is: 167,605.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,509.39 : 286,363.50 = 121,452.77 : x
  2. Step 2: Convert to fraction form
    207,509.39/286,363.50 = 121,452.77/x
  3. Step 3: Cross multiply
    207,509.39x = 286,363.50 × 121,452.77
  4. Step 4: Simplify right side
    207,509.39x = 34,779,639,634.73
  5. Step 5: Solve for x
    x = 34,779,639,634.73/207,509.39
  6. Step 6: Final answer
    x = 167,605.13

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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.