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Finding the Fourth Proportional to 302,808.30, 454,212.45 and 289,030.20

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Solution

The fourth proportional to 302,808.30, 454,212.45 and 289,030.20 is: 433,545.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,808.30 : 454,212.45 = 289,030.20 : x
  2. Step 2: Convert to fraction form
    302,808.30/454,212.45 = 289,030.20/x
  3. Step 3: Cross multiply
    302,808.30x = 454,212.45 × 289,030.20
  4. Step 4: Simplify right side
    302,808.30x = 131,281,115,265.99
  5. Step 5: Solve for x
    x = 131,281,115,265.99/302,808.30
  6. Step 6: Final answer
    x = 433,545.30

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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.